Spheres A and B have their radii 40 cm and 10 cm respectively. The ratio of the surface area of A to the surface area of B is :

Spheres A and B have their radii 40 cm and 10 cm respectively. The

1.	Spheres A and B have their radii 40 cm and 10 cm respectively. The ratio of the surface area of A to the surface area of B is :
A.	10 : 1
B.	12 : 1
C.	14 : 1
D.	16 : 1
Answer» E.

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Spheres A and B have their radii 40 cm and 10 cm respectively. The ratio of the surface area of A to the surface area of B is :

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