Answer:
Let R be the greater radius and r be the smaller radius
A) Area of the sidewalk = R^2 - r^2 - This can be the expression
B) = 3.14
=(R^2-r^2)
=(11^2-9^2)
=(121-81)
=*40
That was the simplified expression
Answer = 3.14 * 40 = 125.6m^2
Step-by-step explanation:
78 inches if you you know that a foot is 12 inches you can add 12 for every inch then add 6 for the half making it 78 inches.
The answer would b be d 8 I think
Answer:
-7/3
Step-by-step explanation:
Answer: V=πr2h
3
=π·2.52·12.6
3
=82.46681
Step-by-step explanation:
