Question

Find the length of the rectangle whose: breadth is 8 m and area is 72 sq. m.

Answer 1

Answer:

Area of rectangle=length×breadth

72=l×8

72=8l

l=72/8

l=9m

Therefore, the length of the rectangle is 9m

Answer 2

Given -

• Breadth of rectangle = 8m
• Area of rectangle = 72m²

To find -

• Length of rectangle

Solution -

Let the length of rectangle be 'L'

Area of rectangle = L × B

Where,

L = Length

B = Breadth

A = Area

Substituting the values -

Area of rectangle = L × B

→72 = L × 8 m

→ L = 72/8 m

→ L = 9 m

$\therefore$ Length of the rectangle is 9m

Verification -

L × B = A

A = 9 × 8 = 72m²

A = 72 = 72 m²

Hence LHS = RHS

More formule -

• Perimeter of rectangle = 2(l + b)

• Area of square = Side × Side

• Perimeter of square = 4 × side

• Area of triangle = 1/2 × base × altitude or height

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