Chapter 9: Circles
Standard NCERT & CBSE aligned study curriculum. Master concepts, track accuracy, revise weak areas, and challenge yourself with 9 customized practice modes.
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Syllabus Sections
Print-Ready Math Worksheet
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Worksheet Details:
- • Title: Class IX Math: Circles Printable Sheet
- • Format: Print Optimized CSS stylesheet
- • Sections: Formulas checklist, 5 assessment questions, worked keys
NexPro Education Worksheet
Class IX Mathematics: Circles
Section I: Key Formulas
Section II: Answer the Questions
1. (a) The circumference of the base of 10 m high conical tent is 44 m. Calculate the length of canvas used in making the tent, if width of canvas is 2 m. (3) (b) Into a conical tent of radius 8.4 m and vertical height 3.5 m, how many full bags of wheat can be emptied, if space for the wheat in each bag is 1.96 m3? (2)
2. The radius and height of a cone are in the ratio 3 : 4. If its volume is 301.44 cm3, what is its radius? (Use = 3.14)
3. A cloth having an area of 165 m2 is shaped into the form of a conical tent of radius 5 m (i) How many students can sit in the tent if a student, on an average, occupies 5/7 m2 on the ground? (ii) Find the volume of the cone.
4. In the given figure, O is the centre of circle. Find ∠AQB, given that PA and PB are tangents to the circle and ∠APB = 75°.
5. In the given below left figure, AB is a diameter of the circle with centre O. AQ, BP and PQ are tangents to the circle. Prove that ∠POQ = 900.