Question

The diameter of a football is five times the diameter of a cricket ball. Find the ratio of surface area of football and cricket ball.

Answer 1

Answer:

25

Step-by-step explanation:

Surface area of a sphere = 4$\pi r^{2}$

Surface area of sphere∝ r²

Radius of football is 5 times the radius of cricket ball

so ratio of surface areas is 25

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Answer 2

RATIO OF S A WILL BE   1/25 BECAUSE  SQUARE OF RATIO OF HALF OF DIAMETER  1/25