The area of a rectangular region is 7.26 x 10^3square feet. The length of the rectangular region is 1.21 x 102 feet. How much does it cost to surround the region with a border that costs $0.80 per foot?

nlgqer

step-by-step

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.

step-by-step explanation:

explanation:

step-by-step explanation: