Question

the area of the umbrella varies directly as the square of its radius if the radius of the umbrella is doubled how much will be the area of the umbrella​

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.

Answer 2

Step-by-step explanation:

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.

Now if the radius is doubled the area will be

K(2R)2 = 4KR2 = 4C.

So the area will be by 4 times of normal the area of the umbrella.

Hope this will help you