Work Shown:
15 green out of 60 total
15/60 = 1/4 = 0.25 = 25%
Answer: b= 2a/h
Step-by-step explanation:
The formula for the circumference of a circle = 2 x radius x pi
The radius is given as 21 cm and pi = 3.142
Circumference = 2 x 21 x 3.142 = 131.964 cm
