The radii of two circles are 49 cm and 63 cm. How much longer is the second circle than the first?

14 cm

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28 cm

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88 cm

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None of these

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Solution

The correct option is C 88 cm
Circumference of first circle = 2πr = 2π x 49 = 308 cm

Circumference of second circle = 2πr = 2π x 63 = 396 cm

So, second circle 88 cm longer than the first circle.

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The radii of two circles are 49 cm and 63 cm. How much longer is the second circle than the first?

The correct option is C 88 cmCircumference of first circle = 2πr = 2π x 49 = 308 cm Circumference of second circle = 2πr = 2π x 63 = 396 cm So, second circle 88 cm longer than the first circle.

The correct option is C 88 cm
Circumference of first circle = 2πr = 2π x 49 = 308 cm

Circumference of second circle = 2πr = 2π x 63 = 396 cm

So, second circle 88 cm longer than the first circle.