The inside of a rectangular box has the following measurements lenghth- l.0m, width-80cm and height-60cm. find the cost of painting the four sides and the bottom of the box at ₹10/m.
Answers
Question :
The inside of a rectangular box has the following measurements lenghth- 1.0m, width-80cm and height-60cm. find the cost of painting the four sides and the bottom of the box at ₹10/m² .
Given :
- length = 1m
- Width = 80cm = 0.8 m
- Height = 60cm = 0.6 m
- Cost of painting = ₹10/m²
To find :
Cost of painting 4 wall and bottom of box
Formula used :
Area of rectangle = one side × other side
Solution :
For finding , Cost of painting 4 wall and bottom of box , we need to find area of 4 wall and bottom of box
➝ Wall is rectangle, with two side as height and other two side either as length or witdh
➝ Area of 4 wall = 2(length × height) + 2(height × width)
➝ Area of 4 wall = {2×(1×0.6) } m² + {2×(0.8×0.6) } m²
➝ Area of 4 wall = { (2×0.6) + (2×0.48) } m²
➝ Area of 4 wall = 1.2 + 0.96 m²
➝ Area of 4 wall = 2.16 m²
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Bottom of box is a rectangle made with length and width as side
➝ Area of bottom of box = (1×0.8) m²
➝ Area of bottom of box = 0.8 m²
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➝ Total area to be painted = Area of 4 wall + Area of bottom of box
➝ Total area to be painted = 2.16 m² + 0.8m²
➝ Total area to be painted = 2.96 m²
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Cost of painting 4 wall and bottom of box = Total area to be painted × Cost to paint 1 m²
➝ Cost of painting 4 wall and bottom of box = 2.96 m² × ₹10/m²
➝ Cost of painting 4 wall and bottom of box =
₹29.6
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ANSWER :
Total cost of painting = ₹29.6