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If the circumference (not circumfrance) is 31.4, the radius is 4.9975 units (to 4 dp).

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Q: What is the radius of a circle if the circumfrance is 31.4?

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Approximatly 50inches

The area is 314 cm2

You press pi button on the calculator or type in 3.14 you then times it by the radius then square it. :) x

diameter ------------- Diameter. The R (radius) of a circle multiplied by two equals the diameter.

10 feet.

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8

multiply the radius by two then pultiply that by pi

125.6 feet

circumference = 2*pi*5

Work it out the circumfrance of a circle is pie x the diameter!

9.9975

30 x 3.14 = 94.2

about 314

314 sqmm

The circumference of a circle is twice the radius times PI [2*pi*r] with r = 4 >> about 25

Diameter. distasnce from center to edge is radius length around is circumfrance

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

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