Question

. How long will a man take to make a round of a circular field of radius 21 m, cycling at the
speed of 8 km/h?​

Answer 1

Step-by-step explanation:

plz refer to attachment..

Answer 2

Step-by-step explanation:

Given :-

Radius = 21 m

Speed = 8 km /h

Find :-

Time taken

Solution :-

Circumference of circle = 2πr

= 2 × 22\7×21

= 2× 22 × 3

= 132m

T = D÷ S

T = 132 × 18/5 ÷ 8

T = 59.4 minutes

.

. . Approximately 1 hr will be required .