Question

Marta’s family drove around a traffic circle 3 times before making a turn. The traffic circle has a diameter of 75 meters. How far did they drive?

Answer 1

Answer: 706.86 meters

Explanation:

The formula for the circumference of a circle is

C = 2πr

We are given that the diameter is 75 m.

So the radius is the half of 75 m.

75/2 = 37.5

Plugging the values in the circumference formula we get:

C = 2π37.5

C = 75π or 235.62 m

If the car drove around the circle 3 times, multiply the circumference by 3

235.62 x 3 = 706.86 m

Maria's family drove 706.86 meters

In terms of pi, the answer would be 225π meters.