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14 votes
Can someone help me with this?

Can someone help me with this?-example-1

2 Answers

5 votes

Answer:

87.9 in³ OR 88.0 in³

Explanation:

Concepts

The volume of a cylinder is
\pi r^2h, where r = radius and h = height.

The radius is twice the diameter.

Application

We are given the diameter as 4 inches, so the radius is 2 inches. The height of the cylinder is 7 inches. Now, we just apply our aforementioned formula and plug in its values of r and h. Since I don't know if you're using pi as 3.14 or just using the exact value of pi, I have provided two different answers at the top.

Solution

1:


  • 3.14*2^2*7

  • 3.14*4*7

  • 3.14*28

  • 87.92

  • 87.9

2:


  • \pi *2^2*7

  • \pi *4*7

  • 28\pi

  • 87.9645943005...

  • 88.0
User John Freeman
by
7.9k points
13 votes

Answer:

88.0 in^3 to nearest tenth.

Explanation:

The radius = 1/2 diameter

= 11/2 * 4 = 2 ins,

The Volume = πr^2 h

= π * 2^2 * 7

= 87.96 in^3.

User Pete Scott
by
8.5k points

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