Asquare pyramid has a base with side lengths each measuring 40 inches. the pyramid is 21 inches tall, with a slant height of 29 inches. what is the surface area of the pyramid? 3,280 inches 3,280 square inches 3,920 inches 3,920 square inches

For solving the area of a square pyramid, we can use the formula below:A=a²+2a sqrt (a²/4 +h²)wheres for the slant height, r for the a/2, where a is the side length and h for the heightSubstitute the values, A=40²+(2*40) SQRT (40²/4 +21²)A=3920The answer is 3920 for the area of the square pyramid.

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