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What is the circumference of a circle with a diameter of four feet?
Circumference equals pi (which is about 3.14) times diameter (or pi times 2 times the radius, which is the same thing). Pi times 4' = 12' 6.8"
Does the area of a circle equal pi?
no, the area of a circle equals pi times the radius squared or circumference times diameter over four.
What is the exact circumference of a circle with an 8 foot diameter?
The circumference is pi times the diameter, so the exact figure is 8 x pi (about 3.1416).To four decimal places, 8 x pi = 25.1327 feet
What is true about the diameter of a circle?
It is 1/pi times the circumference. A triangle with the diameter as its hypotenuse and the third point anywhere on the circle is always a right-angled triangle. A quadrilateral with all four corners on a circle is a cyclic quadrilateral. If one of its diagonals is a diameter of the circle, it has two right angles.
How do you find the radius of a circle given the diameter?
The radius of a circle is half of the diameter! So, if the diameter was four inches, the radius would be two inches!
