Question

What happens to the area of the circle if its radius is doubled?

Answer 1

It is similar to your previous question.
You can try it yourself.
Take radius as x and 2x. And apply the formula and take ratio.

Answer 2

Like I said earlier, radius is the length

IF \(k\) is doubled, \(2k\) would be your new length.

Area would become \((2k)^2=4k^2\)

Answer 3

Now you can compare it would your old area, which is \(k^2\)
\(4k^2 \div k^2= ~?\)

Answer 4

you mean to say that area also gets doubled?

Answer 5

Re-read my post above

Answer 6

4

Answer 7

Yes

Answer 8

area gets four times!

Answer 9

yup

Answer 10

got it!
thank you

Answer 11

You are welcome :)