Spheres A and B have their radii 40 cm and 10 cm respectively. Ratio of surface area of A to the surface area of B is: - Study24x7
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Spheres A and B have their radii 40 cm and 10 cm respectively. Ratio of surface area of A to the surface area of B is:

A

1 : 16

B

4 : 1

C

1 : 4

D

16 : 1

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