Answer:
Rate of increase in height =
Step-by-step explanation:
we know that volume of a cone is given by

It is Given that diameter equals height thus we have

Differentiating both sides with respect to time we get

Applying values and solving for
we get

Answer:
3
Step-by-step explanation:
7.2 ÷ 2.4 = 3
4z ≥ 7
divide seven by four
z ≥ 1.75
or, if you need it in fraction form, it would be
z ≥ 7/4
40+90=130
180-130=50
50+130=180
x=130
50+x=180