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The length and breadth of the fence are 80 and 70 meters, respectively.

Step-by-step explanation:

Let suppose that fencing has a rectangular form. The length to breadth ratio is . Dimensionally speaking, the total cost for fencing the plot (), measured in monetary units, is the product of perimeter of the rectangle (), measured in meters, and unit cost (), measured in monetary units per meter, that is:

(1)

(2)

Where:

- Breadth of the fence, measured in meters.

- Length of the fence, measured in meters.

By applying the ratio described above, we reduce (2) into this form:

(3)

Where is the length to breadth ratio, no unit.

If we know that , and , then the length and breadth of the rectangle are, respectively:

The length and breadth of the fence are 80 and 70 meters, respectively.

step-by-step explanation:

i am not sure sorry : c

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.