plz help me in this sum
the radius of a sphere is doubled, what will be the ratio of its surface area to that of the first sphere.
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your answer is there in the attachment.
hope it helps you!
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let the radius of 1st sphere be x
...... radius of other one will be 2x
Now , For the 1st sphere
Surface area = 4πr²
For the 2nd sphere
Surface area = 4π(2r)²
= 4π4r²
= 8πr²
Ratio of surface area from 1st to 2nd sphere is......
4πr²:8πr²
=1:2
I HOPE IT HELPS....!!!!
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MARK IT BRAINLIEST PLZ.....
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