A triangular billboard with a bottom length of 10m and 4m. If you want to paint the billboard, paint it 0 A triangle billboard, bottom length 10m, 4m. If you want to paint this billboard, every 75kg of paint per square meter. How many kg of paint should be used for this billboard? (keep the whole kilogram)

A triangular billboard with a bottom length of 10m and 4m. If you want to paint the billboard, paint it 0 A triangle billboard, bottom length 10m, 4m. If you want to paint this billboard, every 75kg of paint per square meter. How many kg of paint should be used for this billboard? (keep the whole kilogram)

First calculate the area of the billboard. The area of the triangle is equal to the bottom times the height divided by 2
That is: (10m × 3.4m) △ 2 = 17 square meters
75 kg per square meter, then 0. 75 × 17 = 12. 75 kg
If you keep the whole kilogram, round it to 13 kilogram
So the answer is 13 kg!

There is a triangle sign, the bottom is 2 meters, the height is 1.5 meters,
Then paint both sides of the sign. Is it enough to buy 2kg of paint?
Come on, I'm going to write now

Not enough, 2.4kg, 2 * 1.5 * 0.5 * 0.8 * 2 = 2.4kg