20. In performing a dimensional analysis problem, a student does the following: lit 22. . = X = .= . . 22ft 22R 12in. Em 183m 3. What has the student done wrong? b. How would you explain to the student a way of checking that units are correct? 4) Suppose a triangle has sides of length 8, 15, and 17. Is it a right triangle? 5) What is the exact height of an equilateral triangle if all sides are of length 10? Of length 3? 0f length 4? 0f lengths? 33. Jhoti is looking at the ratio of feet to yards. Since there are 3 feet in 1 yard, she says there must be 3 square feet in 1 square yard. Do you agree? Explain, using a sketch. 34. Monique says she wants to know the length and width of a square plot of land that measures 14 acres in size. If an area is 43,560 ft , should she take the square root of 43,560 to find each side of a one acre square, and then multiply by 14? How would you help?20. The speed of sound is 1 100 ft/sec at sea level. a. Express the speed of sound in mi/hr. b. Change the speed of sound to mi/year. Let 365 days = 1 year.4) Use an appropriate English unit to estimate a) the length of your table, b) the distance from Chicago to Denver, and c) the width of a pencil.6} Find the perimeters of the plane figures shown below by measuring them a) Using an appropriate English unit. b) Using an appropriate metric unit. c} Now convert your metric units to English units to check that your measurements in b} match you measurements in a}. 8) I want to run around the below lake. I plan to hug the shoreline. How far do I have to run? Think about various ways you could use a map to answer this question. How accurate is your estimate? How can you improve its accuracy? Lake Jen Scale 1 cm = 3 miles\f\f\f