A wire in the form of a rectangle 18.7 cm long and 14.3 cm wide is reshaped and bent into the form of a circle. Find the radius of the circle so formed.

A) \$16 cm\$

B) \$17.2 cm\$

C) \$10.5 cm\$

D) \$12.6 cm\$

The diameter of a wheel of a car is 63 cm. Find the distance travelled by the car during the period in which the wheel makes 1000 revolutions.

A) \$1980 m\$

B) \$1655 m\$

C) \$1220 m\$

D) \$1730 m\$

A boy is cycling such that the wheels of the cycle are making 140 revolutions per minute. If the diameter of the wheel is 60 cm, calculate the speed per hour with which the boy is cycling.

A) \$15.84\$ km\hr

B) \$17.84\$ km\hr

C) \$15.84\$ km\hr

D) \$19.84\$ km\hr

A well of diameter 150 cm has a stone parapet around it. If the length of the outer edge of the parapet is 660 cm. then find the width of the parapet.

A) \$60 cm\$

B) \$30 cm\$

C) \$25 cm\$

D) \$36 cm\$

The diameter of the driving wheel of a bus is 140 cm. How many revolutions per minute must the wheel make in order to keep a speed of 66 km per hour?

A) \$300\$

B) \$375\$

C) \$315\$

D) \$250\$