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Q: What is the formula for the radius of a circle when the area is 7cm?

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The circumference of a circle with a 7cm radius is 44cm. The area is 154cm2

153.94 square cm

Area of the circle: pi*7squared = 153.93804 square cm

7cm; the diameter of a circle is twice its radius.

98 cm^2

The radius is 7cm

3.5 cm

3.5 cm

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

A cone with a slant height of 22cm and radius of 7cm has a total surface area of about 637.74cm2

A cylinder with a 7cm radius and 3cm height has a total surface area of about 439.82cm2

A = 38.485 cm2

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