Question

What is the surface area of the right prism? height-18in, width-6in,length-9in

Answer 1

C. 486 is your answer.

Answer 2

Answer: Option A.

Step-by-step explanation:

The surface area of a right rectangular prism can be calculated with this formula:

$SA = 2(wl + lh + hw)$

Where "w" is the width. "l" is the lenght and "h" is the height.

We know that:

$w=6in\\l=9in\\h=18in$

Knowing this values, we can substitute them into the formula.

Therefore we get that the surface area of a right rectangular prism is this:

$SA = 2[(6in)(9in) + (9in)(18in) +(18in)(6in)]$

$SA=648in^2$

This matches with the option A.