The circumference is 31.4 dm. What is the length of its radius?
| August 13, 2021 | education
We know that the circumference is calculated by the formula:
L = 2πR. Provided that this value is 31.4 dm, and π = 3.14, we express the radius (it is the quotient product and known factors):
R = L: π: 2 = 31.4: 3.14: 2 = 5 dm.
Find the area of a circle bounded by a given circle using the formula:
S = πR² = 3.14 * 5² = 3.14 * 25 = 78.5 dm².
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