An open cube of length 40 cm is made from metal sheet how much metal sheet will be required to make this. The inside and outside surface of the cube is to be painted at a rate of 10 paisa per sq.cm. how much will it cost to paint the cube
Answers
Answer:
An open cube of length 40 cm is made from metal sheet how much metal sheet will be required to make this. The inside and outside surface of the cube is to be painted at a rate of 10 paisa per sq.cm. The cost of painting the cube is Pais 160000
Step-by-step explanation:
Note: The cube is open. So, we will get the surface area of five sides and not six sides.
The area of metal sheet used to make the cube = the total surface area of the cube.
The total surface area of an open cube is given by:
Area = 5S²
Substituting this in the formula we have:
Area = 5 × 40² = 8000 cm²
If we are painting the inside and outside of the cube, it means we will paint double the area.
So, the area painted = 8000 × 2 = 16000 cm²
The rate of painting is 10 pais per square cm
The cost of painting is = 16000 × 10 = pais 160000
Answer:
Sorry I don't know
Step-by-step explanation:
And I will not copy the answer from the first one I am really sorry but I don't know the answer