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Multiply the radius by (2 x pi).

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Q: What is the circumference of a circle whose radius is 20?
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What is the radius of a 20 ft circle?

The radius of a circle is the distance from the center of the circle to any point on its circumference. In this case, if the circle has a diameter of 20 feet, the radius would be half of that, which is 10 feet. So, the radius of a 20 ft circle is 10 feet.


find the length of the radius the circumference and the area of the circle the center is 20 feet use 3.14 for pi?

radius = diameter/2 circumference = 2*pi*radius or pi*diameter area = pi*radius2


What would the perimeter of a 20ft semicircle be?

That depends on what you mean by a "20 ft semicircle".A semi-circle is a half circle.A 20 ft circle could be:A circle of diameter 20 ftThe perimeter of the semicircle is half the circumference plus the diameter → perimeter = 1/2π 20 ft + 20 ft= 10π + 20 ft≈ 51.42 ftA circle of radius 20 ftThe perimeter of the semicircle is half the circumference plus double the radius → perimeter = 1/2 2π 20 ft + 2 x 20 ft= 20π + 40 ft≈ 102.08 ftA circle of circumference 20 ftThe perimeter of the semicircle is half the circumference plus the diameter → perimeter = 1/2 20 ft + 20 ft ÷ π= 10 ft + 20/π ft≈ 16.37 ftHowever, if a 20 ft circle is a circle with a circumference (= perimeter) of 20 ft then a 20 ft semi-circle could be a semicircle with a perimeter of 20 ft→ perimeter = 20 ft


How many linear feet in a 6 foot diameter circle?

To find the circumference of a circle with a diameter of 6 feet, you first need to calculate the radius, which is half of the diameter. So, the radius would be 6 feet divided by 2, which equals 3 feet. The formula for the circumference of a circle is 2πr, where r is the radius. Therefore, the circumference of a circle with a 6-foot diameter would be 2 x π x 3 feet, which equals approximately 18.85 feet.


What is the radius of a 20cm circle?

That depends what you mean with "a 20 cm. circle". If 20 cm. is the radius, you already have the answer. If 20 cm. is the diameter, the radius is half the diameter. (10cm)

Related questions

What is the radius of a circle whose circumference is 40 pi?

The radius of a circle whose circumference is 40pi is 20 units.


What is the radius of a circle with circumference of 20 pi?

The radius of this circle is 10 units.


What is the circumference of a circle with a radius of 20 feet?

Circumference of a circle equals Pi times the double the radius C = 2 x 3.14 x radius C= 2 x 3.14 x 20 C = 125.6 The circumference of a circle with a 20 foot radius is 125.6 feet.


find the circumference of a circle 5ft radius?

20


What is the diameter of a circle whose radius is 10?

20; the diameter of a circle is twice its radius.


How do you find the radius of a circle with a circumference of 20 inches?

radius = 20/(2*pi) = 3.183098862 inches


What is the circumference of a circle with a radius of 10?

Circumference = Pi * diameter. so Circumference = pi * 20 = 62.832


What is the circumference of a circle with a radius of 20 meters?

Circumference = 2*pi*r = 125.66 metres


What is the radius of a circle with a circumference of 20 pi?

Divide the circumference by (2 x pi).


What is the diameter and circumference of the circle whose radius is 10 meter?

The diameter is 20. (The diameter is twice the radius. The radius is from the center to any edge of the circle.)The circumference is 62.83. ( The diameter X Pi (3.14... equals the circumference.)OR:Using only the radius: (2 X Pi X radius will also equal the circumference.)In this example 2 X 3.14 X 10 (2 X 3.14 = 6.28 X 10= 62.8)


What is the radius of a circle with a circumference of 20 inches?

r = 3.18 inches.


If the circumference of a circle is 20 feet what is the radius?

It is 3.18 feet, approx.