SOLUTION: One triangular face of a pyramid has a base of 20 meters and a height of 30 meters. What is the area of the triangular face?

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Question 953513: One triangular face of a pyramid has a base of 20 meters and a height of 30 meters. What is the area of the triangular face?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
h=height=30m; a=base=20m; s=slant height; A=area
s%5E2=%28%281%2F2%29a%29%5E2%2Bh%5E2
s=sqrt%28%281%2F4%29a%5E2%2Bh%5E2%29
s=sqrt%28%281%2F4%2920%5E2%2B30%5E2%29
s=sqrt%28100m%5E2%2B900m%5E2%29
s=31.6m
A=%281%2F2%29sa
A=%281%2F2%29%2831.6m%29%2820m%29
A=316m%5E2 ANSWER: The area is 316 square meters.