Question

a man walk around a circular Park 4 times in 12 minute the radius of the park is 49 M find the speed of the man in kilometre per hour use Pi is equal to 22/7​

Answer 1

the speed in km/he =1.232/0.2=12.32/2=6.16km/hr

Answer 2

circumference of circle=2 pie r

2×22÷7×49

=308m

man walked=308×4

1232

$\frac{x1}{y2} = \frac{x1}{y2}$

$\frac{12 }{60 } = \frac{1232}{y2}$

$12 \times y2 = 60 \times 1232$

$y2 = \frac{1232 \times 62}{12}$

=6.16kmph