Answer:
7. 206.9955 in^2
8.482.1372 ft^2
9.256 ft^2
Step-by-step explanation:

notice, if the original area was πr², then the new area has a factor in front of it, that much.
Answer: r=1/2
Step-by-step explanation:
Answer:
-12
Step-by-step explanation:
a(b - c)
b = 3, c = -3 and a = -2
-2( 3- -3)
-2(3+3)
-2(6)
-12