Answer :

Assertion is wrong and Reason is Wrong.


Explanation:


Assertion (A):


Given: volumes of two sphere are in the ratio 27:8.


Volume of the sphere is given by: πr3


Let V1 be the volume of the first sphere.


Let V2 be the volume of the first sphere.


V1:V2 = π(r1)3 : π(r2)3


27:8 = (r1)3 : (r2)3


r1 : r2 = 3:2


Surface area of the sphere is given by: 4πr2


Let S1 be the Surface area of the sphere.


Let S2 be the Surface area of the sphere.


S1 : S2 = 4π(r1)2:4π(r2)2


S1 : S2 = (r1)2: (r2)2


S1 : S2 = (3)2: (2)2


S1 : S2 = 9:4


Reason(R):


Volume of a sphere = πr3.


Surface area of a sphere = 4πR2.


Assertion is wrong and Reason is Wrong.

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