29. The wheel of a compact car has a 25-in. diameter. The wheel of a pickup truck has a 31-in. diameter. To the nearest inch, how much farther does the pickup truck wheel travel in one revolution than the compact car wheel?

See Problem 4.

Find the length of each arc shown in red. Leave your answer in terms of π . pi .

B Apply

36. Think About a Plan Nina designed a semicircular arch made of wrought iron for the top of a mall entrance. The nine segments between the two concentric semicircles are each 3 ft long. What is the total length of wrought iron used to make this structure? Round your answer to the nearest foot.
    • What do you know from the diagram?
    • What formula should you use to find the amount of wrought iron used in the semicircular arches?

Find each indicated measure for ⊙ O . circle dot o .

37. m ∠ E O F m angle e o f
38. m E J H ⌢ m . modified e j h with frown above
39. m F H ⌢ m , modified f h with frown above
40. m ∠ F O G m angle f o g
41. m J E G ⌢ m . modified j e g with frown above

42. m H F J ⌢ m . modified h f j with frown above

43. Pets A hamster wheel has a 7-in. diameter. How many feet will a hamster travel in 100 revolutions of the wheel?

44. Traffic Five streets come together at a traffic circle, as shown below. The diameter of the circle traveled by a car is 200 ft. If traffic travels counterclockwise, what is the approximate distance from East St. to Neponset St.?

    

    1. 227 ft
    2. 244 ft
    3. 454 ft
    4. 488 ft
45. Writing Describe two ways to find the arc length of a major arc if you are given the measure of the corresponding minor arc and the radius of the circle.

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