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Question
 A car is fitted with 6 * 14 wheels and 185/65 R 14 tires on them. What is the rolling radius of the original tire?

एक कार में 6*14 पहिए लगे हैं और उन पर 185/65 R 14 टायर  हैं। मूल टायर का रोलिंग त्रिज्या क्या है?

A.

298.05 mm

B.

398.05 mm

C.

278.05 mm

D.

288.05 mm

Answer ( Option A)

298.05 mm

Solution

Explanation:

  • Radius of the wheel = ½ * 14 = 7 in = 177.8 mm.
  • Section height of tire = 0.65 * 185 = 120.25 mm.
  • Rolling radius of the original tires = 177.8 + 120.25 = 298.05 mm.

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