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

Mathematics
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A. 310 ft2 B. 158 ft2 C. 135 ft2 D. 74 ft2 I thought it was C but it was wrong -_-
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the back side in the image is very confusing :/
its 2.5 and 3.3

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Other answers:

hint: 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
im still confused
but you understand what I said?
i dont really -_-
k wait, let me work through the whole thing first then I'll explain it to you.
okay thank you
|dw: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).
well 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
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for the second formula i got 29.7 ... i dont know how to do the 1st one
yes 29.7 is right for the top(pyramid).
okay now can you explain how to do the bottom
for the bottom(square prism) it is even easier. 2(4.5 x 6 + 4.5 x 6) + (4.5 x 4.5)
this 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.
i got 74.25 now what ??
add them together.
to get your final answer.
i got 103.95 but thats not a choice
your 74.25 you got is wrong, try again.
it should be 128.25
no, it is \[4(4.5*6)+ 2(4.5*4.5)\]
with @ankolix formula i got 142.5
@ankolix I don't think you understand the concept that you only need 4.5 x 4.5 once not twice.
@JayDS my answer and your answer are both not an option
yeah.. ivemistake
please tell me the options.
A. 310 ft2 B. 158 ft2 C. 135 ft2 D. 74 ft2
and you made a calculation error before, so please be careful when entering it in the calculator.
is 4(4.5*6)+(4.5*4.5)+29.7=157.95.. option B
yep, option B.
using 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.
medal for gratitude ;)
okay thank you so muchh..
@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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