Question

If x = 14 cm, y = 7 cm, and z = 8 cm, what is the surface area of the figure?

Answer 1

Formula for sufrace area of rectangular prisms: S= 2 (lw + lh + wh)

for the first prism, x=14, plug 14 into 2(x)--> 2(14)=28

7,8,28

S= 2 [7(8)+7(28)+8(28)]

S= 2 (28+196+224)

S= 2(448)

S= 896

for the second prism, x is just 14

7,8,14

S= 2 [7(8)+7(14)+8(14)]

S= 2 (28+98+112)

S= 2(238)

S= 476

Add the two sufrace areas we found and the answer will be

D) S= 1,372