Question

What is the surface area of the rectangular prism with the width 18 1/2 ft, 4 5/6 ft and 5 1/3 ft?

Answer 1

Use the formula for the surface area of a rectangular prism:


`\sf A=2(wl+hl+hw)`

Plug in what we know:


`\sf A=2((18(1)/(2))(5(1)/(3))+(4(5)/(6))(5(1)/(3))+(4(5)/(6))(18(1)/(2)))`

Multiply:


`\sf A=2((98(2)/(3))+(25(7)/(9))+(89(5)/(12)))`

Add:


`\sf A=2(213(31)/(36))`

Multiply:


`\boxed{\sf A=427(13)/(18)~ft^2}`