The width of the rectangular room is 5 m, and the length is 4 m. How much varnish is required

The width of the rectangular room is 5 m, and the length is 4 m. How much varnish is required to cover the floor in this room, if 250 g of varnish is consumed per 1 m2?

S = 5m * 4m = 20 square meters.
Since the room has the shape of a rectangle with sides of 5 meters and 4 meters, the area of the room S will be equal to the product of its adjacent sides.
20 * 250 = 5000 grams = 5 kg of varnish.
For 1 square meter, 250 grams of varnish is consumed, which means that 20 * 250 = 5000 grams = 5 kg of varnish are needed for 20 square meters.
Answer: You will need 5 kg of varnish to cover the floor in this room.