SOLUTION: Please help with the homework below: 1. A circular swimming pool with a radius of 8m and the paved area round and up to 1 meter away from the swimming. Calculate the paved area

Question 1204111: Please help with the homework below:
1. A circular swimming pool with a radius of 8m and the paved area round and up to 1 meter away from the swimming. Calculate the paved area
Answer by math_tutor2020(3817) (Show Source): You can put this solution on YOUR website!

The smaller circle (just the water alone) has a radius of 8. Its area is 64pi when using the circle area formula A = pi*r^2 with r = 8.

The larger circle has a radius of 8+1 = 9 meters. The larger circle's area is 81pi. This consists of the water and the surrounding paved walkway.

Subtract the circle areas to get the area of the paved ring around the pool
81pi - 64pi = (81-64)pi = 17pi

The exact walkway area is 17pi square meters
That approximates to 17*3.14 = 53.38 square meters when using pi = 3.14; use more decimal digits of pi to get a better approximation.

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