Area
What is the formula for calculating the area of a rectangle and square?
Area of rectangle = length × breadth
Area of square = side × side
Length of a rectangle = 6 cm
Breadth of a rectangle = 2 cm
Calculate the perimeter.
Perimeter of a rectangle = 2 × (l + b)
= 2 x (6 + 2) cm
= 2 x 8 cm
Perimeter = 16 cm
What is the definition of area?
The surface/region enclosed by a plane closed figure is called an area.
What is meant by perimeter?
Perimeter is the sum of the length of the boundaries of a closed figure.
Side of Square = 5 m
Find the area.
Area of square = side x side
= 5 m x 5 m
Area = 25 sq. m
Square Side = 7 m
Calculate the perimeter.
Perimeter of square = 4 × length of the side
= 4 × 7
= 28 m
Breadth = 4 cm
Length = 8 cm
Calculate the area.
Area of rectangle = length x breadth
= 8 cm x 4 cm
Area = 32 sq. cm
What is the difference between area and perimeter?
Area is the amount of space an object takes up. Perimeter is the distance around the outside edge.
Find the total area of these two figures:
1. Square: Side = 6 cm
2. Rectangle: Breadth = 4 cm Length = 9 cm
Area of square = 6 cm x 6 cm = 36 sq. cm
Area of rectangle = 9 cm x 4 cm = 36 sq. cm
Total area of square and rectangle = 36 + 36 = 72 sq. cm
What is the formula to calculate the perimeter of the regular and irregular polygons?
Perimeter of a regular polygon = Number of sides × length of one side
Perimeter of irregular polygon = Sum of length of all the sides