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Q: What is the circumference of a circle if the diameter is ten feet long?

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The circumference is easy to calculate: diameter x Pi (about 3.1416) = circumference. So,10 feet x 3.1416 = 31.416 feet circumference.

Circumference of a circle = 2*pi*radius or diameter*pi Its diameter = circumference/pi

The circle's diameter is about 3.97887358 units long.

A circumference of 21.99 cm

No. The circumference is always (pi) times as long as the diameter. If it isn't, then whatever shape you're looking at is not a circle.

If the table is a circle and the perimeter is 40 feet, then the diameter (rounded to 2 decimal places) would be 12.74 circumference = diameter x pi so, diameter = circumference / pi

circumference = π d (pi x diameter)= 1256.6 feet

Circumference of a circle = 2*pi*radius or pi*diameter

Assuming the 15 feet is the diameter of the circle. Formula to find the circumference of the circle is pi x diameter. 15 × 3.14 = 47.1 feet So the rope will be 47.1 feet long.

The diameter of a circle is found by dividing the circumference by Pi (about 3.1416). So, for your example: 24m / 3.1416 = about 7.64 meters diameter.

The area of a circle, if it has a diameter of 13 feet, is: 132.7 square feet.

The diameter is twice as long as the radius. d = 2r The diameter is basically a line through the center of a circle while a radius is from the center to the circumference of a circle.

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