A can of paint can hold 3 liters of paint. When the paint is brushed on a wall, the paint is 0.05 mm thick. How many cans of paint do you need to paint a wall that is 8 meters high and 20 meters long?

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Answer 1 · 2018-07-15T21:28:15

$3$ $3$ cans

Let $x$ $x$ number of cans of paint are required to paint a wall $20\times 8\ m^2$ then the total volume of paint of wall is given as follows

$20\times 8\times 0.05\times 10^{-3}=(3\times 10^{-3})x$

$x=2.66$

$\approx3$

Thus, we require $3$ cans of paint to completely paint the wall