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 2 years ago
Find the surface area of the figure to the nearest whole number.
PLEASE HELPPPP
 2 years ago
Find the surface area of the figure to the nearest whole number. PLEASE HELPPPP

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ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0A. 310 ft2 B. 158 ft2 C. 135 ft2 D. 74 ft2 I thought it was C but it was wrong _

ankolix
 2 years ago
Best ResponseYou've already chosen the best response.1the back side in the image is very confusing :/

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1hint: split it into two objects. find the surface area of the top triangle pyramid and add it to the surface area of the square prism

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1but you understand what I said?

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1k wait, let me work through the whole thing first then I'll explain it to you.

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1357770316535:dw see I split the two? this is what I meant and excuse my drawing. Note: we do not need to find the bottom base of the pyramid and top of the square prism, as it is not accounted towards the total surface area. (It's the part where they are glued together if you may).

ankolix
 2 years ago
Best ResponseYou've already chosen the best response.1well i can to see 2 solids... the piramid and the cube.. so the piramid area is \[\frac{ 1 }{ 2 }* perimetre*face length\]. in your piramid \[\frac{ 1 }{ 2 } \times 18\times 3.3 \] and the cube surface

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0for the second formula i got 29.7 ... i dont know how to do the 1st one

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1yes 29.7 is right for the top(pyramid).

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0okay now can you explain how to do the bottom

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1for the bottom(square prism) it is even easier. 2(4.5 x 6 + 4.5 x 6) + (4.5 x 4.5)

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1this is because the top of the square prism(where it needs to be used to be stuck against the bottom part of the pyramid) is not accounted for.

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0i got 74.25 now what ??

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1to get your final answer.

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0i got 103.95 but thats not a choice

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1your 74.25 you got is wrong, try again.

ankolix
 2 years ago
Best ResponseYou've already chosen the best response.1no, it is \[4(4.5*6)+ 2(4.5*4.5)\]

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0with @ankolix formula i got 142.5

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1@ankolix I don't think you understand the concept that you only need 4.5 x 4.5 once not twice.

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0@JayDS my answer and your answer are both not an option

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1please tell me the options.

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0A. 310 ft2 B. 158 ft2 C. 135 ft2 D. 74 ft2

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1and you made a calculation error before, so please be careful when entering it in the calculator.

ankolix
 2 years ago
Best ResponseYou've already chosen the best response.1is 4(4.5*6)+(4.5*4.5)+29.7=157.95.. option B

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1using my calculation you will get 157.95. and why is it not exact? because probably when they calculated they used more decimal places which resulted them to get a more accurate answer but we have been only given that, so we just those figures in the picture.

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0okay thank you so muchh..

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1@ankolix, I would like to say you deserve the medal for trying but you have copied off me but good job.
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