Answer:
See below
Step-by-step explanation:
7) a rectangle 12 x 8 = 96
plus semi-circle 1/2 pi r^2 = 1/2 pi 4^2 = 25.132
total = 121.132 m^2
8) Circle area = pi r^2
large circle pi * 2^2 = 4pi
MINUS the smaller one pi 1.5^2 = 2.25 pi
total = 1.75 pi = 5.498 in^2
9) Square area = 10 x 10 = 100
minus circle pi r^2 = 25pi total = 21.46 ft^2
