Question

the radius of a circle has increased by 20%. by what percentage does the circumference increase ?​

Answer 1

Answer:

1) 20%. 2) 44%

Step-by-step explanation:

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Answer 2

Answer:

Let the radius be r cm.

Circumference=2πr=44/7r cm

New radius=r+20/100r=r+r/5=6r/5 cm

New circumference=2πr=44/7×6r/5=264r/35

Increase in circumference

=(264r/35-r)/r×100=654.28percent

Step-by-step explanation:

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