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:

a=120 cm m=120:100  m=1.2 m b=150 cm m=150:100  m=1.5 m c=60 cm m=60:100  m=0.6 m σ=1/8=81=0.125 kg/m2  S=2 (a b+b c+c a)=2 (1.2 1.5+1.5 0.6+0.6 1.2)=25171=6.84 m2  m=2 σ S=2 0.125 6.84=1.71 kg



Did you find an error or inaccuracy? Feel free to write us. Thank you!







You need to know the following knowledge to solve this word math problem:

solid geometryplanimetricsUnits of physical quantitiesGrade of the word problem

 
We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: