A circle with radius of 4cm sits inside a circle with radius of 11cm.

What is the area of the shaded region?

Area of shaded region = 329.70 cm²

Step-by-step explanation:

Area of a circle = πr²

Area of bigger circle = 3.14 * 11²

= 3.14 * 11 * 11

= 379.94 cm²

Area of smaller circle = 3.14 * 4²

= 3.14 * 4 * 4

= 50.24 cm²

Area of shaded region

= Area of bigger circle - Area of smaller circle

= (379.94 - 50.24) cm²

= 329.70 cm²