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anonymous
 5 years ago
I need some help.. I've already done these problems and i got them back and they need fixed.. will someone please help me
anonymous
 5 years ago
I need some help.. I've already done these problems and i got them back and they need fixed.. will someone please help me

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0on these three i need to find the surface area

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0for the first one we have 4 triangles and a square. the area of a triangle is .5(base)(height) and the area of a square is (base)^2

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0so we have 4(.5)(base)(height)+b^2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0well i redid the first one and i got 103.47

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0=2(base)(height)+(base)^2=2(4.2)(10)+(4.2)^2 is this what you did?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh yeah that's what i meant..

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0the second we have 4 triangles

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0so we have 4 times .5(b)(h) since there are all congruent triangles

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0it looks like you got a check mark on that one and the answer was 67.5?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yea.. all the ones i post need fixed

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0does everything make sense so far?

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0ok lets look at the last one

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0yes there are 6 triangles and then there is that hexagon hex means 6 right?

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0lets look at the triangles first the base 6 and we need to find the height

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0thats if we look at one traingle

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0if we divide a triangle and half we can from a right triangle so we can use the Pythagorean thm the hyp is 12 and if we divide the base in half the base is 3 or our newly formed triangle so we can find the height of the triangle let's call it h. we have 3^2+h^2=12^2 implies h=sqrt(135). so the area of the whole traingle is .5(6)(sqrt(135) since we have 6 trangles we have this area times 6 so this equals 18(sqrt(135)) but now we need to find the area of the hexagon

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0if we draw two vertical lines from one vertex to another and one horizontal line from one vertex to another we would form 2 rectangles and 4 traingles

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0looking at one triangle we see that the hyp is 6 and we know that the legs are equal. so we have b^2+b^2=6^2 imples 2b^2=36 implies b^2=18 implies b=sqrt(18) so the area of the triangle is .5(sqrt18)(sqrt(18)=.5(18)=9 since we have 4 of these triangles then we multiply the 9 by 4 =36 now we need to find the area of the rectangles we know 1 side =6 so we need find the length of the other side that runs perpendicular to it

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0but we found that when we were finding the legs of the triangle above so the side running perpendicular to the 6cm side has length sqrt(18) so the area of the rectangle is (6)sqrt(18) but since we have 2 we multiply by 2 giving us 12sqrt(18) now we add all of our areas together

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0so we have the area of the 6 triangles is 18sqrt(135) and we have the area of the hexagon is 12sqrt(18)+36 the total surface area is 18sqrt(135)+12sqrt(18)+36

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i did my math wrong..

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0that last problem was really long I hope i'm right lol

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0can help me with some more

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0ok i will look at one more and then i have to leave

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the first three are finding volume

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0ok the first one we need to find the area of the base and multiply by the height of the solid

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0the area of the base is .5(b)(h)=.5(6)(8)=24 the height of the solid is 10 so 24(10)=240

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0the second one you shouldnt had divided by 3 it should had been 2

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0the last one you set it up right but you should had got 3451.04

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0np i hope i was a help
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