The volume of a cone is 75π cm3 and the height is 9 cm. what is the radius of the cone? a. 15 cm b. 5 cm c. 25 cm d. 10 cm

We are given with the Volume of the cone , and height of the cone ,

and it is asking about the radius of the cone

Now first of all , we should remember the formula for Volume of the cone

Volume of the cone =

Let's plug the values given

Divide both sides by

Simplifying we get

Divide both sides by 3

Takeing square root on both sides

So

r=5

Hence radius is 5 cm

Option B is the correct one

step-by-step explanation:

i dont get

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)