
To find:
The surface area ofregular pyramid or cone. Round to the nearest whole number.

Answer to Problem 10.21EP
The surface area of our given regular pyramid is 552 square yards.
Explanation of Solution
Given:
A regular pyramid:
Concept used:
Surface area of regular pyramidis area of base plus area of lateral faces.
Calculation:
We can see that base of pyramid is square, so area of base would be:
The area of each lateral face would be same. So we will multiply area of one lateral face by 4 to get area of four lateral face.
To find area of lateral face, we will use area of
Therefore, the surface area of our given regular pyramid is 552 square yards.
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