The Surface Area of a Right Circular Cylinder of Height $S = \pi r ^ { 2 } + 18 \pi r$

question 33

Multiple Choice

The surface area of a right circular cylinder of height 9 units is given by $S = \pi r ^ { 2 } + 18 \pi r$ . Factor this expression.

• A) \(r ^ { 2 } ( \pi + 18 r )\)
• B) \(r ( r + 18 \pi )\)
• C) \(\pi r ( r + 18 )\)
• D) \(r ^ { 2 } ( \pi + 18 )\)
• E) \(\pi \left( r ^ { 2 } + 18 \right)\)

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Definitions:

Denominator

In a fraction, the number below the line.

Fraction

A mathematical expression representing the division of one quantity by another, indicating parts of a whole.

Higher Terms

Advanced conditions or clauses within an agreement or contract that specify more stringent requirements or higher levels of performance.

Denominator

The bottom number in a fraction, representing the total number of equal parts the whole is divided into.