Question

A boy is twirling a model airplane on a string 4 feet long. if he twirls the plane at 0.25 revolutions per minute, how far does the plane travel in 4 minutes? round to the nearest tenth.

Answer 1

25.13 ft

Step-by-step explanation:

r = 4 feet

ω=0.25 revolution per minute

=1 revolution in 4 minutes

total number of revolution N = 1 (in 4 minutes )

v=rω

distance traveled = 2×N×π×r

=2×1×π×4

=8π

= 25.13ft in 4mins