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mckenzieandjesus
 one year ago
A balloon has a circumference of 28 in. Use the circumference to approximate the surface area of the balloon to the nearest square inch.
784 in2
2,463 in2
998 in2
250 in2
mckenzieandjesus
 one year ago
A balloon has a circumference of 28 in. Use the circumference to approximate the surface area of the balloon to the nearest square inch. 784 in2 2,463 in2 998 in2 250 in2

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mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0What is the slant height of the pyramid to the nearest tenth? 19.0 mm 12.5 mm 15.5 mm 13.9 mm

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0Using Euler’s Formula (F + V = E + 2), find the number of faces. Vertices: 16 Edges: 37 Faces: ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0for the Euler's formula one

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3for the balloon problem circumference = 2*pi*r where r is the radius of the balloon we can solve for r by substituting 28 for the circumference 28 = 2*pi*r r = 14/pi surface area of a sphere = 4*pi*r^2 since r = 14/pi, we can plug in 14/pi into the surface area equation and solve for surface area

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0so do i do 2*3.14*14?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3hm, not quite, we want to solve for r first 28 = 2*pi*r we divide both sides by 2 pi, giving us 14/pi = r then we use this value of r for the surface area equation

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0i got 87 23/25?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3dw:1435442689088:dw

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3can you show me how you got that answer?

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.014/3.14 = 4 72/157

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0is that right?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3well, yes, that would be the value of r (let's convert to decimals in this case, it'll make it a bit easier for us later on) r = 14/3.14 = 4.46

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3then we can use this value of r for the surface area equation surface area = 4*pi*r^2 = 4*3.14*(4.46)^2 = 249.8, which rounds to 250

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0oh okay thanks !

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0could u please help me with my second question above?

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0im not sure on this one either :/ What is the surface area of the pyramid to the nearest whole number? 30 cm2 25 cm2 60 cm2 85 cm2

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3let's focus on the slant height one first (the one you posted earlier) the height of the pyramid is 12 and the its base is a square with side lengths of 7 if you look at the triangle inside the pyramid, you can see that it's a right triangle with legs 12 and 3.5 (since 7/2 = 3.5) the slant height (the hypotenuse) can be found using the Pythagorean theorem

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3dw:1435443114081:dw

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0whats the pythagorean theorem?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3dw:1435443244024:dw

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0oh a^2+b^2=c^2?

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0i got 156 1/4

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3remember to take the square root at the end

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3square root, not square

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3dw:1435443406104:dw

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0\[\sqrt{?} this on a an\]

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0on a and b and c?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3the pythagorean theorem tells us (slant height)^2 = 12^2 + 3.5^2 = 156.25 to find slant height, we take the square root of both sides

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3square root slant height^2 = 156.25 slant height = square root of 156.25

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3yup, you got it, do you understand what we did?

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0yes! thank you! and now can we do my next question ?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3alright, it wants the surface area of the pyramid, which means we need to find the area of each of the 4 triangular faces + the area of the base each of the triangles has base = 5 and height = 6 the area of a triangle can be found using the formula: area = (1/2)(base)(height) so the combined area of all the triangles is 4*(1/2)(base)(height) next, we want to find the area of the base, which is a square with sides 5. the area of a square can be found using area = s^2 to find the final answer, add the area of the 4 triangles + area of the square

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3so putting everything together base = 5 height = 6 surface area = 4*(1/2)(base)(height) + (base)^2

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0but thats not on my answers

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3please check your calculations again

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3surface area = 4*(1/2)(6)(5) + (5)^2

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.085? so i was right then because i already have that answer checked?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3yup, 85 is what I got too

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0What is the surface area of the right prism? 540 in2 486 in2 648 in2 972 in2

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3surface area of a prism = 2*L*W + 2*W*H + 2*H*L H = 18 W = 6 L = 9

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0What is the volume of the cone to the nearest tenth? 829.4 m3 1,520.5 m3 552.9 m3 1,244.1 m3

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0i think its a

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3(assuming that the radius is 11, kinda ambiguous from the diagram) volume of cone = (1/3)(pi)*h*(r^2) r = 11 h = 12

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0What is the surface area of the pyramid to the nearest whole number? 96 cm2 132 cm2 72 cm2 156 cm2

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3a is incorrect, please try my formula

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0i got 1519 19/25

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3which is closest to answer b (probably because of rounding)

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.019/25 as a decimal is 0.760

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3and for the last one, it's asking for the surface area of the pyramid. the last problem you posted is very similar to the third problem you posted (surface area of a pyramid), just with different numbers. perhaps you look at my work and solve it on your own? :)

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3helpful reminder: surface area of pyramid = area of 4 triangles + area of square base

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0so (1/3)*3.14*8*(6^2) = 301 11/25

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3wrong formula. area of triangle = (1/2)(base)(height) area of square = (base)^2

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3right, and there are 4 triangles and 1 square so surface area = 4*area of triangle + area of squrae

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0do you know anything about this figure? What is the volume of the composite figure? 192 ft3 76 ft3 152 ft3 96 ft3

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3hint: it's 2 prisms put togetherdw:1435446620974:dw

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3find the volume of prism A and add to the volume of prism B volume = L*W*H volume of A = (4)(2)(8) volume of B = (2)(2)3)

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0do u know what part would be length?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3dw:1435446845195:dw

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0what do i do next?

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0What is the volume of the square pyramid? Round to the nearest tenth. 40.0 cm3 480.0 cm3 147.3 cm3 720.0 cm3

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3volume of square pyramid = (1/3)(L)(W)(H)

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0wouldnt this be rectangle? Describe the cross section of the rectangular prism. rectangle hexagon trapezoid triangle

mckenzieandjesus
 one year ago
Best ResponseYou've already chosen the best response.0thank you for all your time and effort to help me!(:

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3no problem, I'm glad I was able to help
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