OY = 25
Step-by-step explanation:
XY = 2(24) = 48
The triangle is right angled:
OY = hypotenuse = ?
The center to the mid part of XY = 7
opposite = 7
Mid part of XY = 24
adjacent = 24
We would apply pythagoras' theorem:
Hypotenuse² = opposite² + adjacent²
OY² = 7² + 24²
OY²= 49 + 576
OY² = 625
OY = √625
OY = 25