# DAV Class 4 Maths Chapter 12 Worksheet 3 Solutions

The DAV Maths Book Class 4 Solutions and DAV Class 4 Maths Chapter 12 Worksheet 3 Solutions of Area offer comprehensive answers to textbook questions.

## DAV Class 4 Maths Ch 12 WS 3 Solutions

Question 1.
Fill in the blanks.
(a) The best unit of measuring area is ________.
Square

(b) Measure of the amount of surface enclosed by a closed figure is called ________.
Area

(c) Area of rectangle = Length × ________.

(d) Area of square = ________ × ________.
Side × Side

(e) The area of a square having one side equal to 1 cm is ________.
1 sq. cm Question 2.
Find the area of a rectangle whose dimensions are given below:
(a) Length = 8cm Breadth = 3 cm
Length = 8 cm Breadth = 3 cm
Area of rectangle = Length × Breadth
= 8 cm × 3 cm
= 24 cm2 or 24 sq. cm

(b) Length = 12cm Breadth = 9 cm
Length = 12 cm, Breadth = 9 cm
Area of rectangle = Length × Breadth
= 12 cm × 9 cm
= 108 cm2 or 108 sq. cm

(c) Length = 32m Breadth = 12 m
Length = 32 m, Breadth = 12 m
Area of rectangle = Length × Breadth
= 32 m × 12 m
= 384 m2 or 384 sq. m

(d) Length = 1m Breadth = 75 cm
Length = 1 m, Breadth = 75 cm
Area of rectangle = Length × Breadth
= (1 m × 100) × 75 cm
= 7500 cm2 or 7500 sq. cm

Question 3.
Find the area of the following squares whose sides are given below:
(a) 6 cm
Side of square = 6 cm
Area of square = side × side
= 6 cm × 6 cm
= 36 cm2 or 36 sq. cm

(b) 11 cm
Side of square = 11 cm
Area of square = side × side
= 11 cm × 11 cm
= 121 cm2 or 121 sq. cm

Question 4.
The length of a carpet is 5 metres and the breadth is 2 metres. Find the area of the carpet.
Length of carpet = 5 metres
Breadth of carpet = 2 metres
Area of carpet = Length × Breadth
= 5 metre × 2 metre
= 10 m2 or 10 sq. m Question 5.
The length of the one side of a square handkerchief is 22 cm. Find the area of the handkerchief.
Length of one side of square handkerchief = 22 cm
Area of square = side × side
= 22 cm × 22 cm
= 484 cm2 or 484 sq. cm

Question 6.
The length of a playground is 10 metres and breadth is 6 metres. Find the area of the playground.
Length of playground = 10 metres
Breadth of playground = 6 metres
Area of playground = 10 m × 6 m
= 60 m2 or 60 sq. m

### DAV Class 4 Maths Chapter 12 Value Based Questions

Question 1.
How much field was irrigated by Raghu?
Raghu irrigated $$\frac{1}{4}$$ field area.
So, first we have to find area of the field. Then we have to divide it by 4.
Area of field = Length × Breadth
= 90 m × 40 m
= 3600 sq. m
Raghu irrigated $$\frac{1}{4}$$ field area so
= Total area ÷ 4
= $$\frac{3600}{4}$$
= 900 sq. m

Question 2.
Which value is reflected by Raghu?
Raghu showed value of kindness and of helping nature to the needy. Question 3.
How can you help old people in their work?
We can help old people in their work by:
(a) Bringing any needed item by them from nearby shops.
(b) Helping them in carrying their loads.
(c) Giving front position to the old people standing in a queue at public places like Bank, Post office etc.

### DAV Class 4 Maths Chapter 12 Worksheet 3 Notes

Units of Area:
The units used to measure area are:

• Square centimetre (sq. cm)
• Square metre (sq. m)
• Square millimetre (sq. mm)

Area of Rectangle And Square

• Area of rectangle = Length × Breadth
• Area of square = side × side E.g. The length of a park is 20 metre and breadth is 7 metres find the area of the park.