If the circumference of a circle incr...

If the circumference of a circle increases form `4pi` to `8pi` , what change occurs in its area? (a) It is halved. (b) It doubles. (c) It triples. (d) It quadruples.

A

Change= `2 xx` Original area

B

Change = `3 xx` Original area

C

No change

D

Change = `4 xx` Original area

Text Solution

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The correct Answer is:

B

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S CHAND IIT JEE FOUNDATION-CIRCUMFERENCE AND AREA OF A CIRCLE -QUESTION BANK - 22

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