Answer:
V= π ⋅ 4y^2 ⋅ 9x
Step-by-step explanation:
Put the variables from the picture into the equation
r=4y
h=9x
(^2 means squared)
Answer:
2k
Step-by-step explanation:
3k and -k are both like terms, so you can combine them. Adding opposite signs works in the same way as subtraction, so you can rewrite the expression as 3k-k, which is 2k.
When stone hits the ground, it's height will be zero, and since we're finding the time that's required for the stone to hit the ground, we can set h = 0 and solve for t.