Question

What is the surface area of the regular pyramid below?

Answer 1

Answer: B. 864 units²

Explanation:

First, we will find the area of the bottom base square.

L * W = A

16 units * 16 units = 256 units²

Next, we will find the areas of the triangles. Since there are four congruent triangles, we will find the area of one and multiply it by 4.

`\frac{\text{B}\;*\;\text{H}}{2}` = A

`\frac{\text{16 units}\;*\;\text{19 units}}{2}` = A

`\frac{\text{304 units}^2}{2}` = A

152 units² = A

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152 units² * 4 = 608 units²

Lastly, we will add the two values together to answer this question.

608 units² + 256 units² = 864 units²

864 units²