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mrs_skeptik [129]
3 years ago
9

The volume of a right cylinder is 2,000π cubic feet, and the height is 20 feet. What is the length of the radius in feet?

Mathematics
1 answer:
laila [671]3 years ago
8 0

Answer:

r = 10 ft

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  

Equality Properties

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

<u> Geometry</u>

Volume of a Cylinder Formula: V = πr²h

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

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify variables</em>

Volume <em>V</em> = 2000π ft³

Height <em>h</em> = 20 ft

Radius <em>r</em> = unknown

<u>Step 2: Solve for </u><em><u>r</u></em>

  1. Substitute in variables [Volume of a Right Cylinder Formula]:                      2000π ft³ = πr²(20 ft)
  2. [Division Property of Equality] Isolate <em>r</em> term:                                                 100 ft² = r²
  3. Rewrite:                                                                                                             r² = 100 ft²
  4. [Equality Property] Square root both sides:                                                    r = 10 ft
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