Dimensions 2430

The cabinet is shaped like a block, with dimensions 120cm and 150cm on the front side and 120cm and 60cm on the upper wall. It is painted twice on the outside. When 1 kg of paint is enough to paint 8m², how much paint is used to paint the cabinet?

Correct answer:

m =  1.71 kg

Step-by-step explanation:

$m=2\cdot 2\cdot (1.2\cdot 1.5+1.2\cdot 0.6+1.5\cdot 0.6)/8=1.71\text{kg}$

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