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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 else can I help you with?
What is the area of a circle if the radius is 9m?
The area of a circle if the radius is 9m 254.5m2
What is the radius of a circle with the area of 36?
The radius of a circle with the area of 36 is 3.385
What is the area of a circle with radius of 2m?
The area of a circle with a radius of 2m is: 12.566 m2
What is the area of a circle of the radius of 10m?
A circle with a radius of 10m has an area of 314.16 m2
How you get the area of a circle?
A= Area of the circle¶= Pi (About 3.14)r= Radius squared (Radius times radius)3.14 * Radius squared
What is the area of a circle with the radius 21cm?
A = 1385cm2
What is the area of a circle that has a radius of 21cm?
A = 1,385.4 cm2
What is the radius of the circle if circumference is 132cm?
Radius of circle: 132/2pi = 21cm to the nearest integer
If the radius of a circle is 21cm What is the radius?
The radius of any circle is the straight line distance from the centre of the circle to any point on the circumference of the circle. The radius being 21 cm makes no difference to the definition of the radius; it just means that the straight line distance from the centre of that circle is 21cm away from any point on the circumference of that circle. The radius of a circle with a radius of 21 cm is 21 cm.
What is the area of the circle if the diametere is 21cm?
A = 346.36 cm2
What is the answer d21cm?
area of a circle and the question is d=21cm
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 area of a circle if the radius is 9m?
The area of a circle if the radius is 9m 254.5m2
What is the radius of a circle with the area of 36?
The radius of a circle with the area of 36 is 3.385
What is the area of a circle with the radius of 14.4?
The area of a circle with a radius of 14.4 is 651.4
What is the area of circle with a radius of 35?
Area of a circle = pi*radius squared
What is the approximate diameter of a circle whose circumference is 21cm?
The approximate diameter of a circle whose circumference is 21cm is: 6.68cm
