Question

A car moves along a circular track of radius 14m. It completes 1 revolution in 20
seconds.

Calculate the distance the car covers if it travels for duration of 90 seconds.

OPTIONS:

(a) 300 m
(b) 400 m
(c) 308 m
(d) 396 m​

Answer 1

Answer:

I think option A is the right answer

Answer 2

Answer:

Option (D) 396 m

Explanation:

Let's take one revolution = 20 seconds

then 90 seconds ÷ 20 seconds = 4.5 revolution

As one revolution = 2πr

=2×22/7×14×4.5

=2×22×9

=396 m