# To Find Area of a Rectangle when Length and Breadth are of Different Units

To find area of a rectangle when length and breadth are of different units we need to convert and write them in same units and then solve.

For Example:

1. Find the area of a rectangle whose length is 15 cm and breadth is 50 mm.

Solution:

Length (l) = 15 cm.

10 mm = 1 cm.

Therefore, 50 mm = 50/10 cm = 5 cm.

Breadth = 5 cm.

Area = l × b

= 15 × 5 sq. cm.

= 75 sq. cm.

2. Find the area of a rectangle whose length is 32 m and breadth is 200 cm.

Solution:

Length (l) = 32 m.

100 cm = 1 m.

Therefore, 200 cm = 200/100 m = 2 m.

Breadth = 2 m.

Area = l × b

= 32 × 2 sq. m.

= 64 sq. m.

3. Find the area of a rectangle whose length is 17 cm and breadth is 85 mm.

Solution:

Length (l) = 17 cm.

10 mm = 1 cm.

Therefore, 85 mm = 85/10 cm= 8.5 cm.

Breadth = 8.5 cm.

Area = l × b

= 17 × 8.5 sq. cm.

= 144.5 sq. cm.

4. Find the area of a rectangle whose length is 21 m and breadth is 500 cm.

Solution:

Length (l) = 21 m.

100 cm = 1 m.

Therefore, 500 cm = 500/100 m = 5 m.

Breadth = 5 m.

Area = l × b

= 21 × 5 sq. m.

= 105 sq. m.

5. Find the area of a rectangle whose length is 41 m and breadth is 400 cm.

Solution:

Length (l) = 41 m.

100 cm = 1 m.

Therefore, 400 cm = 400/100 m = 4 m.

Breadth = 4 m.

Area = l × b

= 41 × 4 sq. m.

= 164 sq. m.

Area.

Area of a Rectangle.

Area of a Square.

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.

Areas of Irregular Figures.

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

Worksheet on Area.

Practice Test on Area.