Question

ek bus ke pahiye ki radius 0.75 meter hai aur vo 1/2 minute me 84 round pure kr leta hai tab us pahiye ki speed km/h me batao

Answer 1

sabse phele pahiye ka circumference nikalenge

c = 2$\pi$r

let pi = 3.14

c= 2 * 3.14 * 0.75 m

=4.71 m

ab circumference ko 84 se multiply karenge total distance nikalne ke liye

d= c * 84

= 4.71 * 84 m

=395.64 m

time = 1/2 min = 30 secs

distance = 395.64 m

therefore, speed = d/t

=395.64/30

=13.188 m/sec

=13.188 * 3.6

=47.4768 km/h