The circumference of a circle exceeds the diameter by 16.8 cm. What is the diameter of the circle? (Take π = 22/7)

What is the time taken by a person to cover one round of a circular park of diameter 210 m if he walks at a speed of 6 km/hr? (Take π = 22/7)

If the difference between the circumference and radius of a circle is 37 cm, then the area of the circle is

The length of a wire is 66 metre, then the number of circles of circumference 1.32 cm that can be made from the wire is :

A cube whose edge is 14 cm long has on each of its faces a circle of 7 cm radius painted yellow. What is the total area of unpainted surface ? (Take π = 22/7)

A toy is in the form of a cone mounted on a hemisphere of diameter 7 cm. The total height of the toy is 14.5 cm. Then the volume of the toy is (π=22/7):