Question

When paid flat a round parachute has a diameter of 8 meters. What is the parachute’s circumference

Answer 1

25.12

Explanation:

Answer 2

25.12 meters

Explanation:

The circumference of a circle is given by

`c=2\pi r` (1)

where:

`\pi\sim 3.14`

r is the radius of the circle

In this problem, the parachute has a diameter of 8 meters:

d = 8 m

The radius of a circle is equal to half of its diameter, so the radius of the parachute is:

`r=(d)/(2)=(8)/(2)=4 m`

And therefore, by applying eq.(1) we can find the circumference of the circle:

`c=2\pi r=2\cdot 3.14 \cdot 4 = 25.12 m`