Question

the ratio of the radii of two circles is 5:3 . Find the ratio of their area

Answer 1

Answer:

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Let the radii of the given circles be 5x and 3x respectively and let their circumferences be C1 and C2 respectively.

Circumference of a circle = 2πr

Then, C1 = 2 × π × 5x = 10πx and C2 = 2 × π × 3x = 6πx

∴ (C1/C2) = (10πx/ 6πx)

= (C1/C2) = (5/ 3)

= (C1: C2) = 5: 3

Hence, the ratio of the circumference of the given circles is 5: 3

Step-by-step explanation:

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