») What is the circumference of the rim of a basketball hoop with a radius of 9 inches? First, multiply the radius by__ to get t
he diameter__ inches. Then, multiply the diameter by 3.14 (an approximation for 1) to get a circumference of about__ inches. ») Convince Me! If the diameter is doubled, what happens to the circumference? Explain.
First, multiply the radius by 2 to get the diameter 18 inches. Then, multiply the diameter by 3.14 (an approximation for 1) to get a circumference of about 56.52 inches. If the diameter doubles the circumference doubles.
