Answer:
6
Step-by-step explanation:
Answer:
113.115 cm
Step-by-step explanation:
<u>Formula:</u>
C = 2πr
<u>Given:</u>
Radius: 22 cm
Diameter: 44 cm
The perimeter of a semicircle is the sum of half of the circumference of the circle and its diameter.
Simply plug in your numbers to find the circumference first.
C = 2π(22)
C = 44π cm or 138.23 cm
Then, divide the circumference in half, and add your diameter.
Perimeter = (44π/2) + 44 = 113.115 cm
There are 40 black and 20 blue so if you divide by 20 the ratio is 2:1
3x + 50 = 6x - 10
3x (-6x) + 50 (-50) = 6x (-6x) - 10 (-50)
-3x = -60
-3x/-3 = -60/-3
x = 20
hope this helps
