Make a conjecture about the lengths of all the radii of a circle

Please answer ty!

Here's link to the

cutt.ly/zxt1ipy

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

4th option is correct xy=-10

if this was to u plzz mark me the brainliest