The area of a rectangle and a circle are equal .If the dimensions of the rectangle are14 cm by 11 cm, find the radius of the circle.

A: 14cm

B: 7cm

C: 10.5cm

D: 21cm

Correct Answer : B

Area of a rectangle = L × W

Area = 14 × 11

= 154 cm²

Area of circle = πr²

154 = (22/7)r²

Divide both sides by the value of π and then work out the square root of your answer

Radius = 7 cm

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