Question

Which expression can be used to find the surface area of the following rectangular prism?

Choose 1 answer:


A

10+10+6+6


(Choice B)

B

10+6


(Choice C)

C

15+15+10+10+6


(Choice D)

D

15+15+10+10+6+6

Answer 1

The answer is D

Explanation:

Answer 2

The answer is D.

Explanation:

Given that the formula of surface area of rectangular prism is S.A = 2(length×width) + 2(length×height) + 2(width×height). Then substitute the values into the formula :

Let length = 5,

Let width = 3,

Let height = 2,

`s.a = 2(5 * 3) + 2(5 * 2) + 2(3 * 2)`

`s.a = 2(15) + 2(10) + 2(6)`

`s.a = 15 + 15 + 10 + 10 + 6 + 6`