Question

There is a cicular pond and foot-path runs along its boundary. A man walks around it, exactly once, keeping close to the edge. If his step is 55cm long and he takes exactly 400 steps to go round the pond, what is the diameter of the pond.​

Answer 1

Answer:

circumference of circle = 55 x 400

= 22000cm

circumference of circle = 2πr

22000 = 2 x 22/7 x r

22000 x 7 /44 = r

3500cm = r

so,

the diameter is 7000cm