Circumference of a Circle
Author:R. D. Sharma
7th CBSE
IMPORTANT
Important Questions on Circumference of a Circle
MEDIUM
IMPORTANT
A well of diameter has a stone parapet around it. If the length of the outer edge of the parapet is , then find the width of the parapet (in ). (use: )

MEDIUM
IMPORTANT
A wire of length is in the form of a square. It is cut and made a circle. Find the ratio of the square to that of the circle. ( use: ).

MEDIUM
IMPORTANT
An Ox in a kolhu (an oil processing apparatus) is tethered to a rope long. If the distance covered in rounds is , find .

EASY
IMPORTANT
A water sprinkler in a lawn sprays water as far as in all directions. If the length of the outer edge of wet grass is , find . (use: ).

