The ratio of the surface area and volume of sphere is 3:7 cm, then c=? , v=???
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4πr²/4πr³/3 = 3/7
1/r/3 = 3/7
1/r= 1/7
r= 7
1/r/3 = 3/7
1/r= 1/7
r= 7
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