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WARRIOR [948]
3 years ago
6

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

Mathematics
1 answer:
eimsori [14]3 years ago
5 0

Answer:

294 in.²

Step-by-step explanation:

I believe this figure is a rectangular prism.

------------------------------------------------------------------------------------

<u>Explain:</u>

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)

------------------------------------------------------------------------------------

<u>Solve:</u>

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

------------------------------------------------------------------------------------

<u>Conclude:</u>

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

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