47.14285714285714
radius = 1/2 of diameter
radius=7.5 which is half of 15
using circumference of circle formula (2 * by pi * by radius)
pi=22/7
2*22/7*7.5=47.14285714285714
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If 15 cm is the diameter then circumference is pie x diameter which is 3.14 x15
About 4.712 inches.
It is very easy math!
The circumference of a circle can be calculated using the formula C = πd, where C is the circumference, π is a constant approximately equal to 3.14159, and d is the diameter of the circle. In this case, the diameter of the pool is 15 feet, so the circumference would be C = π(15) = 47.12385 feet. Therefore, the length around the 15-foot diameter pool would be approximately 47.12 feet.
The formula for area of a circle is Pi x r (squared), A = Pi(rxr). So since the diameter is 30 you divide it by two and get 15 and then square it and multiply it by pi and get 706.86 meters.