Area | Class 8 | Practice Set 15.6

Area | Class 8 | Practice Set 15.6

Area Class 8 Practice Set 15.6, examples related to the area of the circle are solved in a simple way in the attached pdf file.

Practice-Set-15.6

In this practice set, area of the circle is asked to find out. The area of the circle is calculated by using the formula (pi) * r^2, where ‘r’ is the radius of the circle.

The other formula which is also used for solving one of the example of this practice set is the formula of circumference of the circle.

Also read : Equations in one variable | Class 8 | Practice Set 12.2

The circumference of the circle is calculated by using the formula, c =2 * pi * r, where ‘r’ is the radius of the circle.

In one of the examples, we are also asked to find the diameter of the circle. The diameter of the circle is twice the radius of the circle.

All the problems of this practice set are solved by using the above mentioned formulae. Sometimes we have to arrange the formula as per the requirement of the question and by doing simple calculations we can find our required answer.

Also read : Equations in one variable | Class 8 | Practice Set 12.1

The questions answered in the attached pdf file are as follows,

1. Radii of the circles are given below, find their areas.
   (1) 28 cm (2) 10.5 cm (3) 17.5 cm
2. Areas of some circles are given below find their diameters.
   (1) 176 sq cm (2) 394.24 sq cm (3) 12474 sq cm
3. Diameter of the circular garden is 42 m. There is a 3.5 m wide road around the garden. Find the area of the road.
4. Find the area of the circle if its circumference is 88 cm.