To find the volume of dirt needed for the flower garden, we first need to find the volume of the circular garden bed.
The formula to find the volume of a cylinder is V = πr^2h, where r is the radius and h is the height.
Since the garden bed is circular, the radius is half of the diameter. Therefore, the radius is 12 feet / 2 = 6 feet.
The height of the garden bed is the thickness of the dirt layer, which is 4 inches. However, we need to convert inches to feet to keep all the units consistent.
Since there are 12 inches in a foot, 4 inches is equal to 4/12 = 1/3 feet.
Plugging the values into the formula, we have V = π(6 feet)^2(1/3 feet) = 36π/3 = 12π cubic feet.
The volume of dirt needed for the flower garden is 12π cubic feet.
Jeffrey is buying dirt for a circular flower garden with a diameter of 12 feet. The layer of dirt needs to be 4 inches thick. What is the volume of dirt needed for the flower garden
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