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tiny-mole [99]
2 years ago
13

Find the volume of a cone with a diameter of 12 m and a height of 7m.

Mathematics
2 answers:
Mamont248 [21]2 years ago
7 0

\Large \purple \maltese \Huge\: \underline {\rm {{{\color{cyan}{Given...}}}}} \:

  • Diameter = 12
  • Radius = 12/2 = 6m
  • Height = 7m

\Large \purple \maltese \Huge\: \underline {\rm {{{\color{cyan}{To \:  Find ...}}}}} \:

  • Volume of cone

\Large \purple \maltese \Huge\: \underline {\rm {{{\color{cyan}{Formula  \: Using ...}}}}} \:

\Large❏  \:  \Large\begin{gathered} {\underline{\boxed{ \sf {{\large {\tt {{{\color{blue}{Volume_{ \red{( cone)}}}}}}}\large\orange\implies \tt \large \: \frac{1}{3}\pi {r}^{2} h}}}}}\end{gathered}

Where,

  • r is radius
  • h is height

\Large \purple \maltese \Huge\: \underline {\rm {{{\color{cyan}{Solution  ...}}}}} \:

<u>Substituting </u><u>the </u><u>given </u><u>values </u><u>in </u><u>formula.</u>

\large {\tt {{{\color{blue}{Volume_{ \red{( cone)}}}}}}}\large\orange\implies \tt \large \: \frac{1}{3}\pi {r}^{2} h

\large {\tt {{{\color{blue}{Volume_{ \red{( cone)}}}}}}}\large\orange\implies \tt \large \: \frac{1}{3}\pi  {(6)}^{2}  \:  \times  \: 7

\large {\tt {{{\color{blue}{Volume_{ \red{( cone)}}}}}}}\large\orange\implies \tt \large \: \frac{1}{ \cancel3}\pi \:  \times  \: \cancel{ 36}  \:   \: ^{ \pink{12}} \:  \times  \: 7 \\

\large {\tt {{{\color{blue}{Volume_{ \red{( cone)}}}}}}}\large\orange\implies \tt \large \:\pi \:  \times  \: 12 \:  \times  \: 7 \\

\large {\tt {{{\color{blue}{Volume_{ \red{( cone)}}}}}}}\large\orange\implies \tt \large \: 84 \pi \:  {m}^{3}

Hence , option b is the correct answer

meriva2 years ago
6 0

Answer:

84π m^3

Step-by-step explanation:

1. The formula of a cone is: (1/3) · π · r^2 · h

2. The radius is 6m. (Diameter / 2)

3. (1/3) * π * (6^2) * 7

4. Multiply all numbers <em>besides pi</em> to get the answer in terms of pi

5. (36 / 3 ) = 12 * 7 = 84

6. 84π

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