SOLUTION: If the area of the base of a square pyramid is 28 sq. cm and the total surface area is 64sq. cm, explain how to find the area of one triangular face.

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Question 822755: If the area of the base of a square pyramid is 28 sq. cm and the total surface area is 64sq. cm, explain how to find the area of one triangular face.
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi,

If the area of the base of a square pyramid is 28 sq. cm and the total surface area is 64sq. cm



find the area of one triangular face.

 64cm^2 - 28cm^2 = 36cm^2, the sum of the areas of all of the triangular faces. 

 there are 4 faces, all the same size:

  36cm^2/4 = 9cm^2, is the area of one triangular face.