Use π=22/7 for the following questions. 1) Tom ran 4 times around a circular track of diameter 28m. What distance did he cover?

2) The radius of a bicycle wheel is 21cm. How many complete revolutions will the wheel make in travelling 1km.

3) A circumference of a circle is 1386cm. Given that π= 22/7, What is the radius of the circle?

4) A circular track has a radius of 70m. If an athlete runs around it twice, how far has he run?

5) A piece of wire is bent to from a square of area 484cm^2.

a) calculate:
i. The Length of each side of the square.
ii. The perimeter of the square.

b) The same piece of wire is bent to from a circle. calculate:

i. The radius of the circle.
ii. The area of the circle.​