Question

The surface area of a rectangular prism is 208cm. Two of the dimensions are 2cm and 10 cm. Find the measure of the other dimension.

Answer 1

Surface area= 2(lw+lh+wh)

Plug in values

2(2*10+2*x+10*x)

2(20+2x+10x)

2(20+12x)

40+24x

40+24x=208

24x=168

x=7

Final answer: 7 cm