Let’s discuss how to find length or breadth when area of a rectangle is given.

When we need to find length of a rectangle we need to divide area by breadth.

Length of a rectangle = Area ÷ breadth

ℓ = A ÷ b

Similarly, when we need to find breadth of a rectangle we need to divide area by length.

Breadth of a rectangle = Area ÷ length

b = A ÷ ℓ

**Formulas:**

**For Example:****1.** Find the length of a rectangle whose breadth is 5 cm and area is 90 sq. cm.**Solution:**

Breadth (b) = 5 cm,

Area (A) = 90 sq. cm.

Length (ℓ) = Area ÷ breadth

= 90 ÷ 5

= 18

Therefore, **length of rectangle = 18 cm.****2.** Find the breadth of a rectangle whose length is 200 cm and area is 10 m^{2}.**Solution:**

Length (l) = 200 cm,

Area (A) = 10 m^{2}

100 cm = 1 m.

Length (ℓ) = Area ÷ breadth

Length (ℓ) = 200/100 m = 2 m.

Breadth (b) = A ÷ ℓ

= 10 ÷ 2 m.

= 5 m.

Therefore, **breadth of rectangle = 5 m.**

**● Area.
**

**To find Area of a Rectangle when Length and Breadth are of Different
Units.**

**To find Length or Breadth when Area of a Rectangle is given.**

**To find Cost of Painting or Tilling when Area and Cost per Unit
is given.**

**To find the Number of Bricks or Tiles when Area of Path and Brick
is given.**

**Worksheet on Area of a Square and Rectangle**

**5th Grade Geometry**

**5th Grade Math Problems**

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