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What is the approximate area of a circle with a radius of 21 ft?
Wiki User
∙ 12y ago
The area is 441 times pi.
Wiki User
∙ 12y ago
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What is the approximate area of the circular placemat if the diameter is 42 centimeters?
Area of any circle = (pi) x (radius)2Radius = 1/2 of the diameterArea of the placemat = (pi) x (21)2 = 441 pi = 1,385.4 square centimeters = 0.13854 square meter
What is the radius of the sector when the angle is 21 and the arc length is 25?
Circumference of circle: 360/21 times 25 = 3000/7 Radius of sector: (3000/7) divided by (2*pi) = 68 units to the nearest integer
What is the square foot of a 21 foot round pool?
If 21 feet is the diameter, divide it by 2 to get the radius. Then use the formula for a circle: area = pi x radius2. 350 sq ft NOT the 35 the other people answered. A sheet of plywood 4' by 8' is 32 Sq ft thats a really small pool.
What is the volume of a sphere with a radius of 21 units?
The volume of a sphere with a radius of 21 units is: 12,348 units 3
What is the area of the largest circle that can be cut out of a piece of paper 21 cm long and 23 cm wide?
A=346.1850 cm2
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 the radius of 21?
The area of a circle of radius 21 is 1386
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 if the radius is 21?
Using 3.14 as Pi the area of circle is: 1384.74
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 area of a circle with a radius of 21cm?
A circle with the radius of 21cm would have an area of approximately 1384.74 cm. You would find this by using the equation of pi*(radius^2) = pi*(21^2).
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%
