Area of Squares and Rectangles
What is the formula to calculate Area of a Rectangle and a Square?
Area of Rectangle = Length × Breadth
Area of Square = Length × Length
Let's find the area of the rectangle below.
To find the area of the rectangle, we find out how many one-centimetre squares we can fit into the rectangle.
Area of the rectangle = 4 × 2
= 8 cm2
We need 8 one-centimetre squares to make a rectangle 4 cm long and 2 cm wide.
The area of the rectangle is 8 cm2.
Area of Square = Length × Length
Let's find the area of the rectangle below.
To find the area of the rectangle, we find out how many one-centimetre squares we can fit into the rectangle.
Area of the rectangle = 4 × 2
= 8 cm2
We need 8 one-centimetre squares to make a rectangle 4 cm long and 2 cm wide.
The area of the rectangle is 8 cm2.
1. What is the area of a rectangle of sides 3 cm by 2 cm?
To find out the area of the rectangle, we must find out how many 1-cm squares it is made up of.
A 3 cm by 2 cm rectangle is made up of 2 rows of 1-cm squares.
Each row has three 1-cm squares.
The rectangle is made up of six 1-cm squares.
So, the area of the rectangle is 6 cm2.
In other words, the area of the rectangle is the product of its length and breadth.
The longer side of a rectangle is called the length.
The shorter side is called the breadth.
Area of rectangle = Length × Breadth
Area of the given rectangle
= 3 × 2
= 6 cm2
Each row has three 1-cm squares.
The rectangle is made up of six 1-cm squares.
So, the area of the rectangle is 6 cm2.
In other words, the area of the rectangle is the product of its length and breadth.
The longer side of a rectangle is called the length.
The shorter side is called the breadth.
Area of rectangle = Length × Breadth
Area of the given rectangle
= 3 × 2
= 6 cm2
2. What is the area of a 4-cm square?
To find out the area of the square, we must find out how many 1-cm squares it is made up of.
A 4-cm square is made up of 4 rows of 1-cm squares.
Each row has four 1-cm squares.
The square is made up of sixteen 1-cm squares.
So, the area of the square is 16 cm2.
In other words, the area of the square is the product of its sides.
Area of square = Side × Side
Area of the given square
= 4 × 4
= 16 cm2
Each row has four 1-cm squares.
The square is made up of sixteen 1-cm squares.
So, the area of the square is 16 cm2.
In other words, the area of the square is the product of its sides.
Area of square = Side × Side
Area of the given square
= 4 × 4
= 16 cm2
3. Caroline wants to build a wall as shown below.
What will be the area of the wall she builds?
Area of rectangle
= Length × Breadth
= 5 m × 4 m
= 20 m2
The area of the wall will be 20 m2.
= Length × Breadth
= 5 m × 4 m
= 20 m2
The area of the wall will be 20 m2.
4. A square slice of cheese is 9 cm long.
Find the area of the slice of cheese.
Area of square
= Side × Side
= 9 cm × 9 cm
= 81 cm2
The area of the slice of cheese is 81 cm2.
= Side × Side
= 9 cm × 9 cm
= 81 cm2
The area of the slice of cheese is 81 cm2.