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Earn +20 ptsQ: What is the area of a circle with a radius of 21 centimeters?
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What is the area of a circle with a radius of 21cm?
The area of a circle is calculated using the formula A = πr^2, where A is the area, π is a constant approximately equal to 3.14159, and r is the radius of the circle. Plugging in the radius of 21cm into the formula, we get A = 3.14159 x (21)^2 = 1385.44 square centimeters. Therefore, the area of a circle with a radius of 21cm is 1385.44 square centimeters.
What is the area of a circle with a radius of 21 cm?
About 1385.44cm2
What is the circumference of a circle whose radius is 21 meters?
A circle with a radius of 21 meters has a circumference of 131.95 meters.
What is pi times radius squared?
Area of a circle = pi*radius2 in square units
What is the radius of a circle with a circumference of 21 units?
The radius is 3.34 units.
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