An electrician plans to install solar panels on a rectangular section of roof with an area of A square meters. This width of this section of roof is W meters across. What is the length of this section of roof?
Q. An electrician plans to install solar panels on a rectangular section of roof with an area of A square meters. This width of this section of roof is W meters across. What is the length of this section of roof?
Define variables: Step 1: Define the variables for the area (A) and width (W) of the rectangular section of the roof. Let's say the area is 1200 square feet and the width is 30 feet.
Use formula: Step 2: Use the formula for the area of a rectangle, A=W×L, where L is the length. We need to find L.
Rearrange formula: Step 3: Rearrange the formula to solve for L. L=WA.
Substitute values: Step 4: Substitute the values into the formula. L=301200.
Calculate length: Step 5: Calculate the length. L=40 feet.
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