Question

Fin the lentght of rectangle whose lenght and breadth are 9y and 4y respectively ​

Answer 1

The length =9y

Breadth= 4y

Area= l×b

9y×4y=34y

Answer 2

Correct Question :

• Find the Area of the Rectangle whose length and breadth are 9y and 4y respectively.

Given :

• Length of the Rectangle = 9y
• Breadth of the Rectangle = 4y

To Find :

• Area of the Rectangle.

Formula :

• Area of Rectangle = Length × Breadth

Solution :

• Area of Rectangle = Length × Breadth
• Area of Rectangle = 9y × 4y
• Area of Rectangle = 9 × 4 + y × y
• Area of Rectangle = 36 + y × y
• Area of Rectangle = 36 + y²
• Area of Rectangle = 36y²

Therefore :

• Area of Rectangle = 36y²

Knowledge Desk :

What is Rectangle ?

• Rectangle is a shape with similar opposite sides, only 2 sides are equal. With 4 equal sides shape is called as square.

Properties :

• Properties of rectangle are :
• Opposite sides are equal and parrallel
• Opposite angles are equal.
• Adjacent angles are supplementary.
• Diagonals are equal.
• Each of the angles is a right angle.

Formulas :

• Perimeter = 2( l + b)
• Area = Length × Breadth
• Length = Area / Breadth
• Breadth = Area / Length
• Diagonal = √(l)² + (b)²
• l = Length
• b = Breadth

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