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Question : Two ships leave a harbor together traveling on courses that have an angle of 129° : 2144571

**Solve the problem.**

71) Two ships leave a harbor together traveling on courses that have an angle of 129° between them. If they each travel 505 miles, how far apart are they (to the nearest mile)?

A) 1824 mi

B) 435 mi

C) 41 mi

D) 912 mi

72) Two airplanes leave an airport at the same time, one going northwest (bearing of N 45° W) at 410 mph and the other going east at 333 mph. How far apart are the planes after 4 hours (to the nearest mile)?

A) 2158 mi

B) 687 mi

C) 2288 mi

D) 2748 mi

73) Find the area of a triangular garden if the sides are approximately 7 feet, 8 feet, and 14 feet (to the nearest square foot).

A) 447 ft^{2}

B) 5 ft^{2}

C) 392 ft^{2}

D) 19 ft^{2}

74) Tia is going to stain her triangular concrete patio. The patio is approximately 10 feet by 17 feet by 13 feet. If one can of stain covers 17 ft^{2}, how many cans of stain will she need?

A) 4 cans

B) 1 cans

C) 65 cans

D) 51 cans

75) A room in the shape of a triangle has sides of length 14.5 yards, 13.8 yards, and 18.9 yards, If carpeting costs $18.85 per square yard, padding costs $2.40 per square yard, and there is no charge for installation, how much, to the nearest dollar, will it cost to carpet the room?

A) $435

B) $3782

C) $99

D) $2114

76) A solar reflector is made using 29 identical triangular-shaped mirrors, each having sides 1.7 meters, 1.9meters, 1.1 meters. What is the total surface area of the reflector (to the nearest square meter)?

A) 30 m^{2}

B) 31 m^{2}

C) 27 m^{2}

D) 25 m^{2}

77) A painter needs to cover a triangular region 61 meters by 69 meters by 72 meters. A can of paint covers 70 square meters. How many cans will be needed?

A) 318 cans

B) 28 cans

C) 3 cans

D) 14 cans

78) A stained glass window is composed of 20 triangular sections, each with sides 4, 7, and 7 in. Find the total area of the window (to the nearest square inch).

A) 268 in^{2}

B) 3461 in^{2}

C) 13 in^{2}

D) 89 in^{2}