The perimeter of the entire figure is 62.8 cm.
Given, that the diameter of the inner semicircles is 9 cm and the width between the outer and inner semicircles is 2 cm.
The radius of the inner semicircle =4.5 cm and the radius of outer semicircle =5.5 cm (∵Diameter=9+2=11 cm)
We need to find the perimeter of the entire figure.
<h3>What is the perimeter?</h3>
A perimeter is a closed path that encompasses, surrounds, or outlines either a two-dimensional shape or a one-dimensional length. The perimeter of a circle or an ellipse is called its circumference.
We know that, the circumference of a semicircle=πr and the circumference of two semicircles=2πr
Thus, the circumference of inner semicircles=2×3.14×4.5=28.26 cm
The circumference of outer semicircles=2×3.14×5.5=34.54 cm
The perimeter of the entire figure=28.26+34.54=62.8 cm
Therefore, the perimeter of the entire figure is 62.8 cm.
To learn more about the perimeter visit:
brainly.com/question/6465134.
#SPJ1
Open circle with arrow going to the left
X=24 this answer needs to be 20 characters long
Answer:
5 adult and 3 student tickets were purchased
Step-by-step explanation:
Let x be the number of adult tickets
. Then 8
−
x is the number of student tickets
.
7.25
x +
5.5
(8
−
x
)
=
52.75
7.25
x +
44
−
5.5
x
=
52.75
1.75
x
=
8.75
x
=
5
