Question

There will be a circular patio with a diameter of 7 metres.   greg is going to put a tiled edge around the patio. what is the circumference of the patio? m circumference of a circle = 2πr use π = 3.14

Answer 1

If diameter is7, the radius is 3.5m
so c=2πr
       =2×3.14×3.5
       =21.98m

Answer 2

Answer:  The circumference of the patio is 21.98 meters.

Step-by-step explanation:  Given that there is a circular patio with a diameter of 7 meters. Greg is going to put a titled edge around the patio.

We are to find the circumference of the patio.

If 'r' units is the radius of a circle, then the circumference of the circle is given by

$C=2\pi r.$

Since the diameter of the circular patio is 7 meters, so the radius 'r' will be given by

$\textup{radius}=\dfrac{1}{2}\textup{ of the diameter}\\\\\Rightarrow r=\dfrac{1}{2}\times 7\\\\\Rightarrow r=3.5~\textup{meters.}$

Therefore, the circumference of the patio is given by

$C=2\pi r=2\times 3.14\times 3.5=21.98~\textup{meters}.$

Thus, the circumference of the patio is 21.98 meters.