Area of a circle

12 questions

1. The ___ is any line segment that joins the centre of a circle to its edge.
2. Which of the following formulae calculates the circumference of a circle, when the radius is known?
3. Which two calculations could be used to find the area of the parallelogram?
4. The area of the shape is ___ m^2.
5. The first four digits of \pi are ___.
6. Select the parallelogram with the smallest area.
7. Which is a correct formula for calculating the area of a circle?
8. The area of the circle is equal to the area of the parallelogram. The circumference of the circle is 12\pi cm. The base of the parallelogram is ___.
9. The area of the square is 10 cm. The area of the circle is ___.
10. A circle has radius 6 cm. What is the area of the circle?
11. Which circle has an area of 9\pi cm^2?
12. The area of the circle is ___\pi cm^2.

License: OGL