Q1: Fill in the blanks:
(i) A diameter of a circle is a chord that ______ through the centre.
(ii) A radius of a circle is a line segment with one end point ______ and the other end ______.
(iii) If we join any two points on a circle by a line segment. We obtain a ______ of the circle.
(iv) Any part of a circle is called an ______ of the circle.
Q2: Find the diameter of the circle whose radius is:
(i) 4 cm
(ii) 18 cm
(iii) 12 cm
(iv) 7 cm
(v) 3 cm
Q3: Find the area of the circle which circumscribes a square of side 15 units.
Q4: A circle has a radius 7 cm. Find the length of the longest chord of this circle.
Q5: What is the area of a circle having a radius of 7 units?
Q6: A circular walking track of 3 feet width has an inner radius of 10 feet. Find the area of the circular track.
Q7: A circular wheel of 1.5 feet radius makes 1200 rotations. Find the distance covered by the circular wheel.
Q8: The circumference of a circle having a diameter of 18 units is _________.
Q9: What is the radius of a circle drawn in a square of area 121 square units?
Q10: A circular wheel of 1.2 feet radius makes 800 rotations. Find the distance covered by the circular wheel.
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1. What is the formula for the area of a circle? |
2. How do you find the circumference of a circle? |
3. What is the difference between the radius and diameter of a circle? |
4. How can I calculate the circumference if I only have the area? |
5. What are some real-life examples of circles? |
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