Q15 of 79 Page 245

The surface areas of two spheres are in the ratio of 9 : 25. Then their volumes are in the ratio

Let R1,R2 be the radius of the two spheres and V1,V2 be the Volume of this two spheres, A1,A2 be the area of two spheres


Surface Area of Sphere = 4πr2


So we can say,






…Equation (i)


Volume of Sphere




Putting the values from Equation (i) we get




Out of all the four Options,


Correct Option : D

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