22,24,26,28,30.

Mathematics
Tutor: None Selected Time limit: 1 Day

May 1st, 2015

22.  Area = (17X8) + (1/2 X 17/2 X 5) + (1/2 X 17/2 X 5) = 178.5 ft^2

24. consider the shaded region as a trapezoid

  Area = (a+b)/2 * h = ((11+16) /2) * 10 = 135 m^2

  26. Lets divide the figure into three parts

check the attached file for detailed solution

26 detailed solution  

28. ABCD forms a parallelogram with AB = CD = 7 units while perpendicular height between two parallel sides is 6 units. 

Therefore Area of ABCD = base*height = 7*6 = 42 

30. Area of parallelogram = base * height

base = 4 ft 2 in = (4*12) + 2 inches = 50 inches

 height = 2 ft 3 in = (2*12) + 3 = 27 inches

 Area = 50*27 in^2 = 1350 in^2

 Area = (1350/(12*12)) ft^2 = 9.375 ft^2 

 Answer - D


May 1st, 2015

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