Help Please!!! i need help with this question please!. WILL REPORT IF SPAWM

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Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet