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How many 3-inch thick bags of mulch should Noemi buy to cover 100 square feet at a depth of 4 inches? The length is 3.2ft and the width is 2.5ft.

User J Starr
by
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1 Answer

5 votes

Answer:

Approximately 17 bags.

Explanation:

The length of the bag of mulch = 3.2 ft

The width of the bag of mulch = 2.5 ft

The thickness of the bag of mulch = 3 inch = 0.25 ft

Volume of a bag of mulch = length x width x thickness

= 3.2 x 2.5 x 0.25

= 2 cubic feet

So that, the volume of a bag of mulch is 2 cubic feet.

The area to be covered = 100 square feet

The depth of the area = 4 inches =
(1)/(3) feet

volume of the portion to be covered = area x depth

= 100 x
(1)/(3)

= 33
(1)/(3) cubic feet

The volume of the portion to be covered is 33
(1)/(3) cubic feet.

The number of bags of mulch needed =
(33(1)/(3) )/(2)

= 16
(2)/(3)

= 16.6667

The number of bags of mulch needed is 17.

User Nikhil Mulley
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7.9k points