I need help with a few questions. please help.

For this case we have that the figure is made up of two rectangles and a quarter circle.

By definition we have to:

The area of a rectangle is given by:

Where:

a and b: Are the sides of the rectangle

The area of a circle is given by:

Where:

r: It is the radius of the circle

So:

Rectangle 1:

Rectangle 2:

A quarter of a circle:

Thus, the total area is:

The area of the figure is:

chad should not have included the values (1, 2) and (3, 6) because that would mean he only had half a healing card.