Question

find the areas of the rectangles whose sides are 7cm and 4 cm​

Answer 1

Question:-

Find the areas of the rectangles whose sides are 7cm and 4 cm.

Answer:-

Given:

Sides of rectangle are 7cm and 4 cm than

▪︎Length of rectangle = 7cm

▪︎Breadth of rectangle = 4cm

To Find:

▪︎Area of rectangle

Solution:

Area of rectangle

= length × breadth

= 7 × 4

= 28cm²

Points to be remembered:-

▪︎Area of rectangle = length × breadth

▪︎Area of square = side × side

▪︎Area of parallelogram = base × height

▪︎Area of rhombus = ½ × diagonal¹ × diagonal²

▪︎Area of triangle = ½ × base × height

or by Heron's Formula

Answer 2

Given :

⬤ Sides of Rectangle are 8 cm and 4 cm .

To Find :

⬤ Area of Rectangle .

Formula Used :

$\bf[\:{Area \: of \: Rectangle = L \times{b}}\:]$

• l = length
• b = breadth

Solution :

Here ,

• Length = 7 cm.
• Breadth = 4 cm.

According to the Formula :-

L × b

7 × 4

28

Therefore , Area of Rectangle is 28 cm² .

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Related Formulas :

• Perimeter of Rectangle = 2 (l + b)
• Area of Square = Side × Side
• Area of Rectangle = l × b
• Perimeter of Square = 4 × Side
• Diagonal of Rectangle = √l² + b²
• Area of Triangle = 1/2 × b × h
• Area of Parallelogram = b × h

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