See Problems 4 and 5.

Algebra Find the value of each variable. If your answer is not an integer, express it in simplest radical form.

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21. Architecture An escalator lifts people to the second floor of a building, 25 ft above the first floor. The escalator rises at a 30 ° 30 degrees angle. To the nearest foot, how far does a person travel from the bottom to the top of the escalator?

    
22. City Planning Jefferson Park sits on one square city block 300 ft on each side. Sidewalks across the park join opposite corners. To the nearest foot, how long is each diagonal sidewalk?

B Apply

Algebra Find the value of each variable. If your answer is not an integer, express it in simplest radical form.

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29. Think About a Plan A farmer's conveyor belt carries bales of hay from the ground to the barn loft. The conveyor belt moves at 100 ft/min. How many seconds does it take for a bale of hay to go from the ground to the barn loft?

    

    • Which part of a right triangle does the conveyor belt represent?
    • You know the speed. What other information do you need to find time?
    • How are minutes and seconds related?

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