Answer:
197.77
Step-by-step explanation:
Area of circle: A=pi r^2
A= pi 9^2
A= 81 pi
only half of the circle so 40.5
Area of a Square: L x W
18 x 18 = 324
324 - 40.5pi = 197.77
Answer: look up the answer
Step-by-step explanation:
Answer:
47.1
Step-by-step explanation:
c=πd
c=3.14*15
c=47.1
Angles 1 and 2 would be acute and vertical