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

To find cost of painting or tilling when area and cost per unit is given are discussed here.

To find the cost, find the area and multiply it by cost per sq. unit.

### Cost of tiling or painting = area × cost per square unit

For Example:

1. Find the cost of painting a wall of length 80 m and breadth 15 m at the rate of $4 per sq. m. Solution: Area of wall = length × breadth Here, length = 80 m and breadth = 15 m. = 80 × 15 sq. m. = 1200 sq. m. Therefore, painting the wall = area × cost per square unit. Given, rate =$ 4 per sq. m.

= 1200 × 4

= $4800. 2. Find the cost of painting a house of length 160 m and breadth 120 m at the rate of$ 5 per sq. m.

Solution:

Area of wall = length × breadth

Here, length = 160 m and breadth = 120 m.

= 160 × 120 sq. m.

= 19200 sq. m.

Therefore, painting the wall = area × cost per square unit.

Given, rate = $5 per sq. m. = 19200 × 5 =$ 3840.

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.

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.

Worksheet on Area of a Square and Rectangle

Worksheet on Area of Regular Figures

Practice Test on Area.

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