A farmer needs to spread fertiliser over a paddock measuring 40m by 80m. The instuctions on the fertiliser bag say to use 80grams per square meter. How many kilograms of fertiliser will be needed?
There are 3200 square meters. Multiply that by 0.080 kg/m^2. Your answer will be in kg.
To find out how many kilograms of fertilizer will be needed, we first need to calculate the area of the paddock.
The area of a rectangle can be found by multiplying its length by its width. In this case, the length of the paddock is 40m and the width is 80m.
Area = Length x Width
Therefore, the area of the paddock is 40m x 80m = 3200 square meters.
Now, we can calculate the total amount of fertilizer needed by multiplying the area of the paddock by the recommended amount of fertilizer per square meter.
Total fertilizer needed = Area x Amount of fertilizer per square meter = 3200 square meters x 80 grams per square meter.
To convert grams to kilograms, we divide by 1000 since there are 1000 grams in a kilogram.
Total fertilizer needed = (3200 square meters x 80 grams per square meter) ÷ 1000 = 256 kilograms
Therefore, a total of 256 kilograms of fertilizer will be needed for the paddock.