the base of a 10-foot ladder is 2 feet from a building, if the ladder reaches the flat roof, how tall is the building? help me pleas

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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

What is the value of x? enter your answer in the box.