Question

Measuring Circles:Question 1

Answer 1

We have been given that a bicycle wheel has a circumference of 66 inches. We are asked to find the radius of the wheel.

We will use circumference of circle formula to solve our given problem.

$\text{Circumference of circle}=2\pi r$, where r represents radius if circle.

Upon substituting our given values, we will get:

$66=2\cdot 3.14\cdot r$

$66=6.28\cdot r$

$6.28\cdot r=66$

$\frac{6.28\cdot r}{6.28}=\frac{66}{6.28}$

$r=10.509554$

Upon rounding to nearest hundredths, we will get:

$r\approx 10.51$

Therefore, the radius of the wheel is approximately 10.51 inches.