SOLUTION: a lawn is the shape of a triangle with one side being 148 feet long and the altitude to that side is 56 feet long. In the center of the lawn, there is a circular water fountain tha

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Question 1156537: a lawn is the shape of a triangle with one side being 148 feet long and the altitude to that side is 56 feet long. In the center of the lawn, there is a circular water fountain that has a concrete base that has a radius of 10 feet. How many bags of fertilizer that covers 10 square feet will be enough to fertilize the lawn?
Answer by MathLover1(20849) About Me  (Show Source):
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if one side of triangle is 148 feet long and the altitude to that side is 56 feet long, the area of triangle is
A=%281%2F2%29148%2A56
A=74%2A56
A=4144square feet
if there is a circular water fountain that has a concrete base that has a radius of 10 feet, the area of water fountain is
A%5B1%5D=r%5E2%2Api
A%5B1%5D=10%5E2%2Api
A%5B1%5D=100%2A3.14
A%5B1%5D=314
the area of the lawn to be fertilized is
A-A%5B1%5D=4144-314
A-A%5B1%5D=3830
How many bags of fertilizer that covers 10 square feet will be enough to fertilize the lawn?
3830%2F10=383
so, 383 bags of fertilizer will be enough to fertilize the lawn