Find the diameter of a circle whose area is 49п cm2.
| June 16, 2021 | education
The area of a circle is calculated by the formula S = π r2
1. Knowing the value of the area, we calculate the value of the radius:
r2 = S: π = 49π: π = 49 cm2
r = √49 = 7 cm.
2. Now knowing the radius, we calculate the diameter by the formula d = 2 * r.
7 cm * 2 = 14 cm.
Answer: The diameter of the circle is 14 centimeters.
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