If the lateral surface area of a cylinder is 320 cm² and height is 10 cm, what is the radius?

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Accepted Answer

1. **Formula:** Lateral area of a cylinder is $2\pi r h$.

2. **Substitute:** $2\pi r	imes10=320$.

3. **Solve:** $20\pi r=320$ so $r=320/(20\pi)=16/\pi$.

4. **Answer:** Radius $=16/\pi\ 	ext{cm}$, which is option (c).

FINAL_ANSWER: c

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Answer

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