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Gwar [14]
2 years ago
5

An artist creates a​ cone-shaped sculpture for an art exhibit. If the sculpture is 8 feet tall and has a base with a circumferen

ce of 23.236 ​feet, what is the volume of the​ sculpture? Use 3.14 for pi .
Mathematics
1 answer:
Andreas93 [3]2 years ago
6 0

Answer:

The <em>volume</em> of the cone-shaped sculpture is equal to 114.631 ft³.

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

<u>Geometry</u>

Circumference Formula:
\displaystyle C = 2 \pi r

  • <em>r</em> is radius

Volume Formula [Cone]:
\displaystyle V = \frac{\pi r^2 h}{3}

  • <em>r</em> is radius
  • <em>h</em> is height

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify given</em>.

<em>h</em> = 8 ft

<em>C</em> = 23.236 ft

<u>Step 2: Find Radius </u><u><em>r</em></u>

  1. [Circumference Formula] Substitute in variables:
    \displaystyle \begin{aligned}C = 2 \pi r & \rightarrow 23.236 \ \text{ft} = 2(3.14)r \\\end{aligned}
  2. Solve [Equality Properties]:
    \displaystyle \begin{aligned}C = 2 \pi r & \rightarrow 23.236 \ \text{ft} = 2(3.14)r \\& \rightarrow r = 3.7 \ \text{ft} \\\end{aligned}

<u>Step 3: Find Volume</u>

  1. [Volume Formula - Cone] Substitute in variables:
    \displaystyle \begin{aligned}V = \frac{\pi r^2 h}{3} & \rightarrow V = \frac{(3.14)(3.7 \ \text{ft})^2(8 \ \text{ft})}{3} \\\end{aligned}
  2. Evaluate:
    \displaystyle \begin{aligned}V = \frac{\pi r^2 h}{3} & \rightarrow V = \frac{(3.14)(3.7 \ \text{ft})^2(8 \ \text{ft})}{3} \\& \rightarrow V = \boxed{ 114.631 \ \text{ft}^3 } \\\end{aligned}

∴ the <em>volume </em>of the artist-created sculpture is 114.631 ft³.

---

Learn more about Geometry: brainly.com/question/27732359

---

Topic: Geometry

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