# What is the area of the black-shaded region shown in the figure ?

Level pending
Given that AB = 9 units, CD = 4 units and BD is the diameter of the circle.

The line AC is a tangent to the red-semicircle.

The line AC is a tangent to the red-semicircle.

Calculate the area approximated to 2 decimal places.

**Your answer seems reasonable.**Find out if you're right!

Sign up to access problem solutions.

**That seems reasonable.**Find out if you're right!

Already have an account? Log in here.