Question

What is the surface area of the rectangular prism below?

15
A. 525 units2
B. 432 units2
C. 490 units2
D. 496 units2

Answer 1

B ( 432 units^2)

Explanation:

Total surface area= 2*(6*6)+ 4*(15*6)

There are 2 squares at each end of the same size so total area will be 2*(6*6)

If we look at the rectangles( bottom, top and the sides), we can see that all are of same dimensions and there are 4 of them so it's 4*(15*6)

In short, total surface area= 2*(6*6)+ 4*(15*6) = 432 units^2