Question

A circular plate has a diameter of

10 inches. An ant walking along the
edge makes 2 revolutions in 4 minutes.
Approximately how many inches does
the ant travel in one minute? Round
your answer to the nearest tenth of
an inch.

Answer 1

15.7 inches

Step-by-step explanation

The circular plate has a diameter of 10 inches.

The radius is

`r = (10)/(2) = 5in`

The circumference of the circular plate is

`C = 2\pi \: r`

We substitute the value of r to get,

`C = 10\pi`

`C = 31.42`

If the an makes 2 revolutions in 4 minutes, then in 1 minute it will make

half revolution.

But 1 revolution is 31 .42

Therefore half revolution is 15.7 inches to the nearest tenth.