I believe you go : 7/20x100 So.. 7/20= 0.35 0.35x100 = 35%
2,000 square feet (20 x 100 = 2,000).
eg 5 10 15, the mean would be 10 and if we want the mean percentage its the percentage of the total so 10/20x100/1, which is 50%
It depends on the height and shape of the building. Example: a 40x50 building with 10 foot walls = 1800 sq feet. 20x100 building with 15 foot walls 3600 sq feet
The mass percentage of carbon in sucrose can be calculated by dividing the mass of carbon by the total mass of sucrose and then multiplying by 100. In this case, the mass percentage of carbon in sucrose would be (8.4 g / 20.0 g) x 100 = 42%.