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What is the area of a circle if the radius is 21?

Anonymous

∙ 9y ago

Updated: 9/25/2023

Using 3.14 as Pi the area of circle is: 1384.74

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∙ 3y ago

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More answers

area_circle = π × radius²

→ area = π × 21² = 441π units² ≈ 1385 units²

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∙ 9y ago

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Q: What is the area of a circle if the radius is 21?

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What is the area of a circle with the radius of 21?

The area of a circle of radius 21 is 1386

What is the approximate area of a circle whose radius is 21 cm?

A circle with a radius of 21 cm has an area of ~1,385.44 square cm

What is the area of a circle with a radius of 21 feet?

Using 3.14 as Pi the area of circle is: 1384.74

What is the area of a circle when the radius is 21?

Area = pi*212

What is the area of a circle that has a diameter of 42 yards?

A circle with a radius of 21 yards has an area of 1,385.44 square yards.

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Related Questions

What is the area of a circle with the radius of 21?

The area of a circle of radius 21 is 1386

What is the approximate area of a circle whose radius is 21 cm?

A circle with a radius of 21 cm has an area of ~1,385.44 square cm

What is the area of a circle with a radius of 21 feet?

Using 3.14 as Pi the area of circle is: 1384.74

What is the area of a circle if the radius is twenty-one?

A circle with a radius of 21 units has an area of 1,385.44 square units.

What is the area of a circle when the radius is 21?

Area = pi*212

What is the area of a circle with a radius of 21 centimeters?

About 1385.44cm2

What is the area of a circle with a radius of 21 cm?

About 1385.44cm2

How many miles in a 21 mile radius?

If the area is a circle and the radius of the circle is 21 miles, the distance around the circle (circumference) is 131.95 miles. The area of that circle is 1,385.4 square miles.

What is the area of a circle that has a diameter of 42 yards?

A circle with a radius of 21 yards has an area of 1,385.44 square yards.

What is the approximate area of a circle with a radius of 21 ft?

The area is 441 times pi.

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.

If a radius of a circle is increased by 10 percent by what percent does its area increase?

area goes as radius squared 1.1 x 1.1 = 1.21 or 21%

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