SOLUTION: A glass pyramid is designed to be situated at the center of a large courtyard. Each of the four triangular sides has a base that is 10 feet long and 10 feet high. How many squar

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Question 78890: A glass pyramid is designed to be situated at the center of a large courtyard. Each of the four triangular sides has a base that is 10 feet long and 10 feet high.
How many square feet of glass are needed for the base and sides?

Answer by Earlsdon(6103) About Me  (Show Source):
You can put this solution on YOUR website!
For the triangular sides, the area of one side is:
A+=+%281%2F2%29bh The base (b) is given as 10 feet and the height (h) is given as 10 feet. So...
A+=+%281%2F2%29%2810%29%2810%29
A+=+50 square feet for one of the four triangular sides.
The four sides would have an area that is four times this or 4 X 50 = 200 square feet.
For the base,the area would be:
A+=+L%2AW The length (L) and width (W) are given as 10 feet each, so...
A+=+%2810%29%2810%29
A+=+100square feet.
The total area is the sum of all of these:
A%5Bt%5D+=+200%2B100
A%5Bt%5D+=+300square feet.