Q.1.
What is the area of a circle with a radius of 7 cm (to one decimal place)?
Q.2.
What can be calculated using πr ?
Q.3.
A line which passes through the centre of a circle and joins two points on its circumference is called a .......
Q.4.
What is the correct formula for the circumference of a circle?
Q.5.
The area of a circular lawn is 628 m . How far is it across to the nearest metre?
Q.6.
The distance measured around a circle is called the .......
Q.7.
A circular lawn has a 20 m radius. What is the approximate circumference of the lawn?
Q.8.
A line which joins the centre of a circle to a point on the circumference is called a .......
Q.9.
A round table has a diameter of 200 cm. What is the approximate circumference of the table?
Q.10.
To the nearest square metre, what is the area of a circular pool with a radius of 10 m?