Question

A rectangular block of stone has a length of 9 cm, a width of 4 cm, and a height of 12 cm. What is the surface area of the stone?

Answer 1

The surface area of the rectangular block would be `384 cm^2`

Explanation:

Image from SMARTNotebook by @smarterteacher

Image from SMARTNotebook by @smarterteacher

`"216 cm"^2 + "96 cm"^2 + "72 cm"^2 = "384 cm"^2`