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jeyben [28]
3 years ago
12

A cylinder has a height of 4 inches greater than the radius of its base. Find the radius and the height to the nearest inch if t

he volume of the cylinder is 5pi cubic inches.
Mathematics
2 answers:
valkas [14]3 years ago
8 0

Answer:

d

Step-by-step explanation:

just cus

anastassius [24]3 years ago
7 0

Answer:

h=5in, r=1in

Step-by-step explanation:

The volume of a cylinder is:

V=\pi*r^2*h

where r is the radius and h is the height.

The height is 4 inches greater that the radius, so:

h=r+4in

Substituting this in the formula for volume:

V=\pi*r^2*(r+4)

the volume is V=5\pi in^3

thus:

5\pi in^3=\pi*r^2*(r+4in)

Dividing everything between pi:

5in^3=r^2*(r+4in)

5in^3=r^3*+4r^2

We can see that the solution for this is r=1in

since (1)^3*+4(1)^2=1+4=5

We have the radius, now we find the height:

h=r+4in=1in + 4in = 5in

h=5in, r=1in

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