Math, asked by uswainjilla, 9 months ago

The radius of a cirlce has increased by 20%. By what percentage does
1) the circumference increase? ii) the area increase?​

Answers

Answered by Detatrix
0

Answer:

1)20% 2)44%

Step-by-step explanation:

Let old radius be x

The new radius will be 120x/100

Circumference=

old circumference =2 \pi x\\

new circumference=2\pi x\\ *120/100

                  =>Increse by 20%

Area=

old area=\pi x^2\\

new area=\pi x^2\\ *120^2/100^2

               =\pi x^2\\ *144/100

       =>Increase by 44%

Answered by jayesh6724
1

Answer:

circumference 40%

area 44%

Step-by-step explanation:

hope it will help you

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