Math, asked by srashi, 1 year ago

the surface area of a sphere is 616cm find its radius

Answers

Answered by Abhiranjanraj
3
Hey!
Surface area of sphere = 4πr^2
616=4*22/7*r^2
r^2=616*7/4*22
r^2=7*7
r^2=7cm ANS
hope it helps you

Abhiranjanraj: welcome
Answered by BloomingBud
2
Heya !!!

Given : -
Surface area of shpere = 616cm sq.

 =  > 4 \times \pi \times  {r}^{2}  = 616 \\  \\  =  > 4 \times  \frac{22}{7}  \times  {r}^{2}  = 616 \\  \\  =  >  \frac{88}{7}  \times  {r}^{2}  = 616 \\  \\  =  >  {r}^{2}  = 616 \times  \frac{7}{88}  \\  \\  (616 \div 88 = 7) \\  \\  =  >  {r}^{2}  = 7 \times 7 \\  \\  =  >  {r}^{2}  = 49 \\  \\  =  > r =  \sqrt{49}  \\  \\  =  > r = 7

Radius = 7 cm


Hope it helps.

srashi: thanks for answering
BloomingBud: pleasure to help you ^_^
akashkaman22: this would be correct
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