Question

Find the perimeter of the figure shown above where x= 6 dm. (The figure is not drawn to scale andremember to use a 3.14 for all calculations involving 7).Perimeter = ______dmRound answers to 2 decimal places as needed.

Answer 1

Given:

Radius of circle is 6 dm

Perimeter of circle is:

$\text{Perimeter}=2\pi r$

Perimeter of half circle is:

$\text{Perimeter}=\pi r+2r$

If 4 half circle then perimeter is:

$\text{ Perimeter =4(}\pi r+2r)$

Radius = 6 dm

So perimeter of circle is:

$\begin{gathered} \text{ Perimeter=4((3.14}\times6)+(2\times6)) \\ =4(18.84+12) \\ =4(30.84) \\ =123.36 \end{gathered}$