Maharashtra State BoardSSC (English Medium) 7th Standard
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Area of Rectangle

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formula

Area of a rectangle = (length × breadth)

notes

Area of a Rectangle:

The longer side the "length" and the shorter side the "width".

Draw the rectangle on a graph paper having 1 cm × 1 cm squares.

The rectangle covers 15 squares completely.

The area of the rectangle = 5 × 3 sq cm = 15 sq cm

The area of the rectangle is equal to the product of the length of its base and the length of its height.

Area of a rectangle = (length × breadth)

Example

Find the area of a rectangle whose length and breadth are 12 cm and 4 cm respectively.

Length of the rectangle = 12 cm
Breadth of the rectangle = 4 cm

Area of the rectangle = length × breadth
= 12 cm × 4 cm
= 48 sq cm.

Example

The area of a rectangular piece of cardboard is 36 sq cm and its length is 9 cm. What is the width of the cardboard?

Area of the rectangle = 36 sq cm
Length = 9 cm
Width = ?

Area of a rectangle = length × width

So, width = `"Area"/"Length" = 36/9` = 4 cm

Thus, the width of the rectangular cardboard is 4 cm.

Example

Find the area in square metre of a piece of cloth 1m 25 cm wide and 2 m long.

Length of the cloth = 2 m
Breadth of the cloth = 1 m 25 cm = 1 m + 0. 25 m = 1.25 m
(since 25 cm = 0.25m)

Area of the cloth = length of the cloth × breadth of the cloth
= 2 m × 1.25 m = 2.50 sq m.

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