The cost, C, of copper tubing is jointly proportional to the length, l, of the pipe and the square of the diameter, d, of the pipe.
A 32-inch length of 1-inch diameter copper tubing costs $48.00.
A) Find a general formula to describe the relationship, and
B) use the formula to find the cost, in dollars, of a 44-inch length of 1.5-inch diameter copper pipe.Round your answer to 2 decimal places, if necessary.

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The Answer of The cost, C, of copper tubing is jointly proportional to the length, l, of the pipe and the square of the diameter, d, of the pipe.
A 32-inch length of 1-inch diameter copper tubing costs $48.00.
A) Find a general formula to describe the relationship, and
B) use the formula to find the cost, in dollars, of a 44-inch length of 1.5-inch diameter copper pipe.Round your answer to 2 decimal places, if necessary.

The Cost, C, of Copper Tubing Is Jointly Proportional to the Length