Question

Calculate the surface area and show work :) please help me no links!!

Answer 1

294 in.²

Explanation:

I believe this figure is a rectangular prism.

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Explain:

To find the surface area of a rectangular prism, use this formula:

`SA=2lw+2lh+2wh`

or

`SA=2(lw+lh+wh)`

`l-length`

`w-width`

`h-height`

A phrase I use to help remember this formula is:

LISA WILSON LOST HER WITCH HAT TWICE (2)

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Solve:

The length of this rectangular prism is 9 in.

This width is 10 in.

The height is 3 in.

Now, I will plug the numbers into the first formula.

`SA=(2*9*10)+(2*9*3)+(2*10*3)=294 in.^2`

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Conclude:

I, therefore, believe the area of this rectangular prism is 294 in.²