Question

What is the surface

area of a box in the
shape of a rectangular
prism with a length of 8
inches, width of 9 inches,
and height of 4 inches?

Answer 1

Surface Area (S.A.) = 2(8x9 + 8x4 + 9x4)

Surface Area = 2(72 + 32 + 36)

Surface Area = 280

Hope this helps!

Answer 2

Explanation:

The formula for surface area for this kind of figure is

SA = 2*l*w + 2*l*h + 2*w*h

• l = 8
• w=9
• h = 4

SA = 2*8*9 + 2*8*4 + 2*9*4

SA = 144 + 64 + 72 in^2

SA = 280 sqr inches