To answer this question we have to go through each answer, and use this equation:
(a = area, w = width, l = length, h = height)
a=2(wl+hl+hw)
to solve, and see if it's correct.
A) a=2(9·4+3·4+3·9) = 150
Correct!
B) a=2(3·7+4·7+4·3) = 122
Incorrect.
C) a=2(5·8+5·8+5·5) = 210
Incorrect.
D) a=2(7·5+6·5+6·7) = 214
Correct!
The correct answers are A, and D.
Hope this helped! Please comment or DM me if you have anymore questions. :)
