8.5k views
1 vote
Find the volume of a cone that has a radius of 2 yards and a height of 3 yards.

Volume =
yd³
(Use 3.14 for pi and round your answer to the nearest hundredth.)

2 Answers

6 votes

Answer:

volume of a cone = 12.56 yards³

Step-by-step explanation:

volume of a cone = πr²h/3

by substituting the values,

volume of a cone = 3.14 * 2² * 3/3

= 3.14 * 4 = 12.56 yards³

User Mario Rawady
by
8.8k points
1 vote
  • Answer:


\Large{\boxed{\sf Volume = 12.56yd^3}}


\\

  • Step-by-step explanation:

We will find the volume of the cone using the following formula:


\Large{\sf V_(cone) = (B * h)/(3) }

Where:

  • V is the volume of the cone.
  • B is the area of its base.
  • h is its height.


\\

The base of the cone is a circle, so its area can be calculated as follows:


\Large{\sf B = \pi * r^2}

Where:

  • B is the area of the cone's base.
  • r is its radius.


\\

Replacing B with its expression in the first formula, we get:


\Large{\sf V_(cone) = \frac{\overbrace{\sf \pi * r^2}^(B) * h}{3} }


\\


\Large{\boxed{\sf Given \text{:} } \begin{cases} \sf r &=\sf 2yd \\ \sf h &=\sf 3yd \\ \sf \pi &= \sf 3.14 \: (Approximately) \end{cases} }


\\

Substituting these values into our formula, we get:


\sf V_(cone) = (3.14 * 2^2 * 3)/(3) = 3.14 * 4 = \boxed{\boxed{\sf 12.56yd^3}}


\\

Since our result has only two digits after the decimal point, we can consider it already rounded to the nearest hundredth.

User Michael Speer
by
7.7k points
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