circumference

circumference

At the end of the lesson, you review radius and diameter of a circle. You can also calculate its circumference.

What do you still know about circle?

The front wheel of Abdel's bike has a radius of 33cm. 

a. Calculate the circumference of the wheel in cm. Round to the nearest integer.

b. Abdel cycles to school with a speed of 18km per hour.  It takes him 10 min. How many rotations did the wheel make?

Homework time

Do questions 33, 35, 36, 37, 39 on page 72 and 73.