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What is the base area of a cylinder with the diameter of 21?
Its just the area of a circle 21 inches or 21 centimeters? area of a circle is (pi)*r2 where pi = 3.1415.... and r = radius thus A = (3.1415)*(diameter/2)2 u can figure out the answer from that with a calculator
What is the diameter of a circle with a radius of 21 ft?
If radius=21 ft, then diameter = 2*radius = 42 ft
What is the radius of a circle with a 21 inch circumference?
the radius is 10.5 inches. * * * * * Wrong! Circumference = 2*pi*Radius Or, Radius = Circumference/(2*pi) So circumference = 21 inches implies radius = 3.34 inches (to 3 sf)
How many square feet in a 42 inch diameter circle?
Well, let's imagine that circle as a happy little friend on our canvas. To find the square footage, we first need to find the radius by dividing the diameter by 2. So, with a 42-inch diameter, the radius would be 21 inches. Then we can use the formula for the area of a circle, which is π times the radius squared. Just remember, there are about 0.00595 square feet in one square inch, so you can use that to convert your final answer.
What is the circumference of a circle with radius of 21 cm?
Well, darling, the circumference of a circle is calculated using the formula C = 2πr. So, with a radius of 21 cm, you just plug that bad boy in and get C = 2 x π x 21 = 132 cm. Voilà, there you have it!
What is the area of a circle with a radius of 21 centimeters?
About 1385.44cm2
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 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 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 base area of a cylinder with the diameter of 21?
Its just the area of a circle 21 inches or 21 centimeters? area of a circle is (pi)*r2 where pi = 3.1415.... and r = radius thus A = (3.1415)*(diameter/2)2 u can figure out the answer from that with a calculator
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 cm?
About 1385.44cm2
The circumference of a circle is 132cm what is the radius of the circle in centimeters?
To find the radius of a circle when given the circumference, you can use the formula for the circumference of a circle: C = 2πr, where C is the circumference and r is the radius. Given that the circumference is 132 cm, you can plug this value into the formula: 132 = 2πr. To solve for the radius, divide both sides by 2π: r = 132 / (2π) ≈ 21 cm. Therefore, the radius of the circle is approximately 21 centimeters.
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.
