Question

What is the radius of the circle?

Answer 1

`(ae)/(be) = (ce)/(de) = (bc - be)/(ad - ae) \\ \\ = > (8)/(3) = (15 - 3)/(ad - 8) \\ \\ < = > (8)/(3) = (12)/(ad - 8) \\ \\ = > ad - 8 = (12 * 3)/(8) = 4.5 \\ \\ < = > ad = 4.5 + 8 = 12.5 \\ \\ = > r = 12.5 / 2 = 6.25`

Answer 2

8×ED=3×15

ED=45/8

the radius is the half of the diameter

so its 45/16