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Area of a circle is = Pi * Radius Squared.

Depending how accurate you want to be you might need a calculator for Pi to more places but using Pi = 3.14

3.14 * 7 * 7 = 153.86 you should supply some units. If the 7 was in m this answer is in m squared.

Circumference is generally = 2 * Pi * Radius

2 * 3.14 * 7 = 43.96 again if the 7 is in meters then the answer is in m.

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Q: Circumference and area of a circle if the radius is 7?
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