A partially used roll of fabric, 42 inches wide, has 21 feet of material remaini
ID: 112048 • Letter: A
Question
A partially used roll of fabric, 42 inches wide, has 21 feet of material remaining. It contains m^2. 11.4 sq yards + 21 m^2 = cm^2, expressed in scientific notation. 0.8 fluid ounces of ethanol in 11 gallons of fruit punch = ml ethanol/ml punch An 8 foot by 10 m by 23.5 m storage room will hold m^3 of material. John's car weighs 1.3 tons (= U.S. tons or short tons). He adds an air conditioner to it that weighs 13 pounds. What is the total weight of the car in kg. Answer: kg. 1.5 inches of rain fell on a watershed that was 11 km^2 in size. How many gallons of rain fell on the entire watershed? Answer, using scientific notation: gal. A small diesel engine uses 0.3 gal/hour running at a constant rpm. How many hours can the engine run on 34 liters of fuel? Answer: A small town has 3045 people, and an area of 126.4 sq. miles. What is the density of the population (i.e. people /km^2)? Answer: people/km^2 An object moves at the speed of 24 cm/sec. How many seconds will it take to cover 1.05 m? Answer: sec. This Workbook Assignment has 27 questions, and requires 32 answers. In order to get 95 % of the answers correct in order to get credit for this exercise, how many answers will you have to answer correctly? answers.Explanation / Answer
18. 42 inches wide ==> 1inch= 0.0254 m, thus 42 inch = 42*0.0254 = 1.0688 m
21 feet ==> 1 feet = 0.3048 m. thus 21 feet = 21 * 0.3048 = 6.4008 m
thus area of fabric remaining = 1.0688*6.4008 = 6.8411 m2
19. 1 sq yard = 8361.27 sq cm, thus 11.4 sq yard = 11.4* 8361.27= 95318.52 sq cm
1 sq m = 10000 sq cm, thus 21 sq m = 21 * 10000 = 210000 sq cm
thus 11.4 sq yd + 21 sq m = 95318.52+210000 = 305318.52 sq cm = 3.05 * 105 cm2
20. 1 fluid ounce = 29.5735 ml . thus 0.8 fluid ounce = 0.8*29.5735 = 23.6588 ml
1 gallon = 3785.41 ml , thus 11 gallons = 3785.41 *11 = 41639.5 ml
thus ethanol/ punch = 23.6588/41639.5 = 5.68 * 10-4 ml
21. 8 foot by 10 m by 23.5 m will hold = (8 * 0.3048) m * 10 m * 23.5 m = 573.024 m3
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