Area & Circles
100

A triangle has a base of 14 cm and a height of 9 cm. What is its area?

63 cm squared

200

A circle has a diameter of 12 inches. Using 3.14 for pi, what is the circumference of the circle?

37.68 in

300

A trapezoid has a height of 6 meters and bases of 10 meters and 15 meters. What is its area?

75 m squared

400

If the circumference of a circle is 18pi units, what is the total area of that circle in terms of pi?

81pi

500

The area of a circle is 113.04 square inches. Using 3.14 for pi, what is the radius of this circle?

6 inches