Answer:
S.A. = 150.72
Step-by-step explanation:
S .A. = 
4 x 4 x 3.14 = 50.24
3.14 x 4 x 8 = 100.48
100.48 + 50.24 = 150.72
It is .21 or 21 cents for each pound.
Answer:
f(3) = 12
Step-by-step explanation:
F(x) = 2x2. What is f(3)
f(3) = 2(3) 2
= 6x2
= 12
f(3) = 12
Zero because -12 does not equal 12
Answer:
9
Step-by-step explanation:
The ladder is the hypotenuse, the wall is one of the legs. In order to find the other leg you have to do c^2-a^2=b^2. 41^2-40^2 is 81 and the square root of that is 9