Question
In a circle AB is diameter & C is a point on circumference such that AC = 8 cm & BC = 15 cm then find the area of circle ?
As AB is diameter So Angle ACB = 90 degree ; Hence in right angle Δ ABC, AB 2 = AC 2 + BC 2 = 82 + 152 = 64 + 225 = 289 AB = 17 cm = 2R So R = 17/2 cm Hence, Area of circle = πR 2 = π (17/2) 2 = 72.25π cm 2 More Circle Questions
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