Practice Circle Geometry Formulas (2.4) - Quadrilaterals & Circles - IB 10 Mathematics

Practise this section

9 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the formula for the circumference of a circle?
Show hintHide hint
Think about the distance around the circle.
Question 2.
How do you calculate the area of a circle?
Show hintHide hint
Recall how we use the radius for this calculation.
3Question 3.
What is the circumference formula for a circle?
- C = πr
- C = 2πr
- C = r²
Show hintHide hint
Think about how to measure the distance around the circle.
4Question 4.
True or False: The area of a circle is calculated as $A = \pi r^2$ .
- True
- False
Show hintHide hint
Remember, area involves squaring the radius.
Question 5.
A pool is circular with a radius of 12 m. Calculate the area of the pool and the circumference.
Show hintHide hint
Use the formulas for area and circumference respectively.
Question 6.
A circular garden has a circumference of 31.4 meters. What is the radius of the garden? Additionally, find the area.
Show hintHide hint
First, you'll need to find the radius from circumference.

5 more questions in this section. Enroll free to practise them all.