Find the area of a circle with a radius of 6in.

The above figure depicts a dartboard, in which .

A blindfolded man throws a dart at the target. Disregarding any skill factor and assuming he hits the target, what are the odds against his hitting the white inner circle?

Let .

Find the area of a circle with a diameter of 14cm. If necessary, round to the nearest tenths.

You have a circular window in your vacation room. It has a radius of 9 inches. What is the area of the window?

The radius of a circle is . Give the area of the circle.

Find the area of a circle with a diameter of 14cm.

You are conducting fieldwork, when you find a tree whose radius at chest height is . What is the area of a cross section of the tree at chest height?

In the above figure, .

What percent of the figure is shaded gray?

A circle has a diameter of 18cm. Find the area.

A circle has a radius of 5 miles, what is its area?