# Answer to Question #57500 in General Chemistry for luna

Question #57500

To properly apply some fertilizer to your homeâ€™s lawn you must spread 0.51 pounds of fertilizer for every square foot of your homeâ€™s lawn. Your lawn is 39.8 meters long and 20.2 meters wide. How many pounds of fertilizer do you need to buy? Note: 1 meter = 3.28 feet

Expert's answer

First of all the dimensions of lawn should be expressed as feet:

L = 39.8 m = 39.8Ã—3.28 ft = 130.544 ft

W = 20.2 m = 20.2Ã—3.28 ft = 66.256 ft

Then the square of the lawn is:

S = LÃ—W = 130.544 ft Ã— 66.256 ft = 8649.32 ft2

If 1 ft2 corresponds 0.51 pounds, the amount of fertilizer which we need to buy is defined:

M = 0.51 Ã— S = 0.51 Ã— 8649.32 lb = 4411.16 lb

L = 39.8 m = 39.8Ã—3.28 ft = 130.544 ft

W = 20.2 m = 20.2Ã—3.28 ft = 66.256 ft

Then the square of the lawn is:

S = LÃ—W = 130.544 ft Ã— 66.256 ft = 8649.32 ft2

If 1 ft2 corresponds 0.51 pounds, the amount of fertilizer which we need to buy is defined:

M = 0.51 Ã— S = 0.51 Ã— 8649.32 lb = 4411.16 lb

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