Question
If the radius of a circle becomes ten times, how much of
its periphery will be its circumference?Solution
Let the radius of the circle be r cm. Circumference of the circle = 2Οr The new radius of the circle = 10r New circumference of the circle = 2 Ο Γ 10r = 20Οr Β Required answer = 20Οr/2Οr = 10 (times)
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