Verified by Ajay Kumar
A cylinder has radius 2.5 cm and height 10 cm. Find its volume (use \(\pi=3.14\)).
196.25 cm³
178.5 cm³
198.75 cm³
200 cm³
Answer: A
Solution: Volume of a cylinder \(V=\pi r^2h\). Substituting the values, \(V=3.14\times(2.5)^2\times10=3.14\times6.25\times10=196.25\text{ cm}^3\). Trick: Square the radius first, then multiply by the height and \(\pi\).
एक बेलन की त्रिज्या 2.5 सेमी और ऊँचाई 10 सेमी है। इसका आयतन ज्ञात कीजिए। \(\left(\pi=3.14\text{ लें}\right)\)
196.25 सेमी³
178.5 सेमी³
198.75 सेमी³
200 सेमी³
उत्तर: A
हल: बेलन का आयतन \(V=\pi r^2h\) होता है। मान रखने पर \(V=3.14\times(2.5)^2\times10=3.14\times6.25\times10=196.25\text{ cm}^3\)। ट्रिक: पहले त्रिज्या का वर्ग करें, फिर ऊँचाई और \(\pi\) से गुणा करें।
Community answers
Votes use a first-party browser cookie to help prevent repeat votes. Votes indicate helpfulness, not correctness.
No community answers yet. Be the first to share how you solved it.
Share your solution
Help other learners understand the steps. Your answer will be reviewed before it appears.