1. Find the circumference of a circle with a diameter of 6.4 meters.
2. How far will a wheel with a radius of 35 inches travel in one turn.
3. What is the area of a circular mirror with a radius of 16 centimeters?
4. A circle has a diameter of 20mfeet. What is its area?
5. Find the volume of a rectangular solid, 15.7 centimeters by 2 centimeters by 3 centimeters.