Question

The area (A) of an umbrella varies directly to the square of its radius (r) when A = 75 , r = 5. Hence select the correct value for 'A' if r = 3, and the constant of variation 'k'​

Answer 1

Answer:

If the area of the umbrella is C and radius is R then C α R2 or C= KR2 where K is the constant of variation. So the area of the umbrella is KR2.

Step-by-step explanation:

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