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If the lateral surface area of a cube is 100 square inches, what is the length of an edge?A. 2√5B. 4 inC. 5 inD. 10 in

Sagot :

To find the length of an edge

You have to know that there are 6 square surfaces on a cube.

So the equation would be 6a² because is the surface area formula and is equal to 100 square inches

Solve for the a:

6a² = 100

a² = 100/6

a= √( 100/6)

a = 4.0825 in

Rounded to the nearest tenth

a = 4 in

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