Solve the Equation for the Indicated Variable $\mathrm { M } = \pi \mathrm { r } ^ { 2 } \mathrm { hd }$

question 120

Multiple Choice

Solve the equation for the indicated variable. Assume no denominator is 0.
- $\mathrm { M } = \pi \mathrm { r } ^ { 2 } \mathrm { hd }$ , for $\mathrm { r }$

• A) \(r = \frac { \pm \sqrt { \mathrm { M } \pi \mathrm { hd } } } { \pi \mathrm { hd } }\)
• B) \(r = \frac { \pm \sqrt { \pi \mathrm { Mhd } } } { \mathrm { hd } }\)
• C) \(r = \pm \sqrt { \pi \mathrm { Mhd } }\)
• D) \(r = \frac { \pm \mathrm { M } \sqrt { \pi h d } } { \pi h d }\)

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