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If the surface area of a sphere is 154cmssquare in it radius

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Surfacearea of a sperre is= 4 \pi r^2 
therefore                    154=4* 22/7*r^2
                                  154*7/4*22 =r^2
                                  12.25 =r^2
                                    r=3.5cm

Posted by

Satyajeet Kumar

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