A rectangular lot whose perimeter is $290 ft is fenced along three sides. An expensive fencing along the lot's length cost $21 per foot. An inexpensive fencing along the two sides widths cost only $3 per foot. The total cost of the fencing along the three sides comes to $2145. What are the lot's dimensions?

d. is the correct answer

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i dont know nkw

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the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

i would say b) is your answer

sorry if im wrong

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