What is the surface area of a rectangular prisim with a height of 22 and area of 64

Surface Area Formula:
A= 2 ( lw + lh + wh )

l = length
w = width
h = height

Step 1.) plug in what you know

A = 2 ( lw + l 22 + w 22 )

Step 2.) find the length & width

- look at the area.
- a rectangles area is made up of the length and width being multiplied together.
- by saying this, I’m going to estimate how much the length and width would be, and make sure they will add up to 22 when multiplied.
- so, I’m going to say that the length is 11, and the width is 2.

Step 3.) plug in everything and then solve

A= 2 (11•2) + (11•22) + (2•22)

To solve, you are going to first multiple everything in parentheses like so:

A= 2 (22) + (242) + (44)

And then you are going to multiply everything by the 2 like so:

A= (44) + (484) + (88)

And then you are going to combine them all together (by adding) and get:

A= 616

and that is your answer.

The answer would be choice b