My First Brilliant Problem!

A uniform disk of radius $R$ and mass $M$ has a hole of diameter $R$ drilled out from it. The hole that is drilled out spans from the center of the disk to the edge of the disk.

$R = 10 \text{ meters}, M = 5 \text{ kilograms}$

The axis of rotation is through the center of the disk. What is the moment of inertia of the disk with the hole drilled out? Answer in $\text{kg m}^2$ .

Inspired by an F=ma problem.