Question

The angular velocity of a fan blade is 8.4 radians per second.

Approximately how many revolutions does the fan blade make in 1.4 minutes?
Enter your answer, rounded to the nearest tenth of a revolution, in the box.

Answer 1

112.3

Explanation:

8.4 radians = angular velocity

1.4 minutes = time

1 minute = 60 seconds

0.4 = 2/5

2/5(60) = 24 seconds

60+24=84 seconds

1.4 minutes= 84 seconds

84(8.4) = 705.6 radians

1 radian = 0.159155

705.6(0.159155) = 112.299768

Rounded to the nearest tenth is 112.3

Answer 2

the real answer is 112.3 revolutions.

Explanation:

because I took this test and this is the answer not 705.6.