Percentage of Bicycle Wheel Circumference Covered in a Quarter Tu

A bicycle wheel has a radius of 35 cm. What percentage of its circumference is covered in a quarter turn?

Published 15 Jun 2026 • Updated 12 Aug 2026 • 2 min read • Vitorr Classes Editorial Team

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A bicycle wheel has a radius of 35 cm. What percentage of its circumference is covered in a quarter turn? (Use $\pi = \frac{22}{7}$ )

एक साइकिल के पहिए की त्रिज्या 35 सेमी है। एक-चौथाई (Quarter) घूर्णन में उसकी परिधि का कितना प्रतिशत भाग तय होगा? $(\pi = \frac{22}{7})$

A. 15%

B. 25% ✅

C. 30%

D. 35%

✅ 25%

A full revolution (one complete turn) covers 100% of the circumference.

एक पूर्ण चक्कर (Full Revolution) परिधि का 100% भाग कवर करता है।

A quarter turn means:

\frac{1}{4}

of a complete revolution.

Therefore,

\text{Percentage covered} = \frac{1}{4}\times100

=25\%

The radius and the value of $\pi$ are not required in this question because only the fraction of the revolution is asked.

इस प्रश्न में त्रिज्या और $\pi$ का मान आवश्यक नहीं है, क्योंकि केवल घूर्णन के अंश (fraction of turn) के आधार पर प्रतिशत पूछा गया है।

\boxed{25\%}

✅ Correct Answer / सही उत्तर: 25%

A bicycle wheel has a radius of 35 cm. What percentage of its circumference is covered in a quarter turn?