Question

the radius of the circle 50cm. if the radius decreased by 50%,its area is

Answer 1

Answer:

area = 1^2

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Answer 2

Answer:

$\:$

Step-by-step explanation:

To find:-

Let original radius =R

Let's start:-

new radius =10050R=2R

Original area =πR2

New area ={π(2R)2}=4πR2

Decrease in area =(43πR2×πR21×100)% =75%

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