Mathematics · Machine Tools
Calculate the drill spindle rotational speed (RPM) required to drill a hole of 25 mm diameter with a cutting speed of 25 m/min. (Use π ≈ 3.1416)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1232.6 RPM
- 2318.4 RPM✓
- 3636.8 RPM
- 4424.6 RPM
Correct answer
318.4 RPM
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