Basic Mathematics

Length and Area

Circles - Area

         

What is the area of circle O O , if circle O O has a radius of 14?

What is the radius of circle O O , if we know that circle O O has an area of 289π 289 \pi square units?

What is the area of a circle with circumference 10π10\pi?

Γ1 \Gamma_1 is a circle with area 27 27. Γ2\Gamma_2 is a circle whose radius is 3 times the radius of Γ1\Gamma_1. What is the area of Γ2 \Gamma_2 ?

What is the diameter of circle O O , if we know that circle O O has an area of 36π 36 \pi square units?

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