Mathematics
Seyer
18

A pyramid has all sides that are equilateral triangles. Each triangle has side lengths of 9 centimeters. If the surface area of the pyramid is 140.4 square centimeters, what is the slant height of the pyramid?

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(2) Answers
heavy

Sweetie please explain your answer

cannonberry2002

The answer is 5.2 centimeters

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