Mathematics
jahribrown
32

The pyramid has a square base that is 12 inches on each side. It has a surface area of 336 square inches. What is the slant height?

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(1) Answers
Probably

To find the surface area of a pyramid the formula is: SA - Surface Area B - Base n - number of sides of the pyramid not includung the base b - length of one side of the base l - slant height SA = B + 1/2 nbl Since we know everything but the "l" we can solve for "l". I will replace "l" with x to avoid confusion. 336 = 144 + (4 * 12 * x) / 2 336 - 144 = 144 - 144 + (4 * 12 * x) / 2 192 = (4 * 12 * x) / 2 192 = 48x / 2 192 = 24x 192 / 24 = 24x / 24 x = 8 Slant Height = 8 inches

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