Question

How long does it take a plane, traveling at a constant speed of 150 m/s, to fly once around a circle whose radius is 2510 m?

Answer 1

105 secondes

This is an estimate.

Explanation:

To know the distance that the plane needs to travel, we need the circumference of the circle.

$\begin{gathered} 2\cdot\pi\cdot r\text{ = P} \\ 2\cdot\pi\cdot2510\text{ = 15,762.8 m} \end{gathered}$

Since it travels 150 m per second, for 15,762.8 m it would take:

15,762.8 m * 1 s

$\frac{15,762.8m\cdot\text{ 1 s}}{150\text{ m}}\text{ }\cong105.085333\cong105\text{ seconds}$