ALGEBRA! NEED HELP! A rectangular prism has a length of 8 inches and a width of 7 inches. The lateral area is 150 square inches. What is the height of the prism?

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asked Nov 13, 2016 228k views

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Peter Eisentraut · Answer 1 · 2016-11-17T17:36:03+0000

The base's length is 8 and it's width is 7, so it's perimeter will be
$2\cdot (7+8)=30$ . To find the lateral area you shoul multiply this with it's height. So,
$30\cdot h=150\\ h=\frac { 150 }{ 30 } \\ h=5$ (h is height).

ALGEBRA! NEED HELP! A rectangular prism has a length of 8 inches and a width of 7 inches. The lateral area is 150 square inches. What is the height of the prism?

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