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nydimaria [60]
3 years ago
12

PLEASE be respectful and don't do this for the points!

Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
6 0

Answer:

The formula for area of a circle is : A = PI x r^2

A) find the are of the two circles, subtract the two to find the area of the side walk:

Outside circle: A = PI x 10^2

Area = 100PI

Inner circle: A = PI x 8^2

Area = 64PI

Area of sidewalk:

100PI - 64 PI = 36PI

B) replace PI with 3.14:

Area = 36 x 3.14 = 113.04 square meters.

Step-by-step explanation:

Hope this helped.

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