Answer:
Time in seconds when the ball is 4 feet above the ground is:
t= 0.6 and 2.9.
A^2+b^2=c^2 so c^2=12^2+16^2 which then simplifies to c^2=144+256 then simplify that to c^2=400. After that take the square root of c^2 and the square root of 400. So your answer is c=20

diameter = 4m
radius = 4/2
= 2m
volume = (3.14)(2^2)(6.3)
= 79.128m^3
Answer: 1 and 3/70
Explanation: Find the least common denominator and then combine like terms. The LCM is 70.