a) So we know the formula of finding the circumference: 2*pi*R.
Assuming we make pi = 3.14: 2 * 3.14 * 7 = 43.96.
b) We also know the formula of finding the area: pi * r^2.
3.14 * 7^2. Using PEMDAS:
3.14 * 49 = 153.86
Answer:
Please refer to the attached image.
x = 2 ± √11 (I believe)
Step-by-step explanation:
10) 40
just subtract 95 and 55
