A school hockey rink 50 m long, 20 m wide is surrounded by a rectangular rim with a height of 1 m. How much paint

A school hockey rink 50 m long, 20 m wide is surrounded by a rectangular rim with a height of 1 m. How much paint will be required to paint the rim from the outside and inside, if the paint consumption per 1 M2 is 140 g and the paint should be applied in 2 layers?

We have four rectangular sides, two of which have dimensions of 1 m * 20 m, two more have dimensions of 1 m * 50 m.Let’s find the area of all sides on one side:
2 * (1 * 20) + 2 * (1 * 50) = 40 + 100 = 140 m ^ 2;
Considering that the sides need to be painted on both sides and in two layers, we will find the area to be painted:
140 * 2 * 2 = 560 m ^ 2;
Find the required amount of paint:
560 * 140 = 78400 g = 78.4 kg.
Answer: 78.4 kg of paint will be required to paint the sides.