Question

Item 8 A right rectangular prism has a length of 8 centimeters, a width of 3 centimeters, and a height of 5 centimeters. What is the surface area of the prism? Enter your answer in the box.

Answer 1

8 * 3 = 24

8 * 5 = 40

3 * 5 = 15

Therefore, the surface area of the cuboid is 2(24 + 40 + 15) = 158.

Answer 2

`158c {m}^(2)`

Step-by-step explanation

The total surface area of a rectangular prism is

`= 2(lw + lh + wh)`

The length is

`l = 8cm`

The width is

`w= 3cm`

The height is;

`h = 5cm`

We substitute the values in to the formula;

`= 2(8 * 5 + 8 * 3 + 3 * 5)`

`= 2(40 + 24 + 15)`

`= 2 * 79`

`= 158c {m}^(2)`