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3) The isosceles trapezoid ABCD is the union of two smaller trapezoids ABFE and EFCD. AB has length 8 units, EF has length 4 units and DC has length 2 units. The area of trapezoid ABCD is 20 square units. What is the height of trapezoid EFCD?
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4) An isosceles triangle has vertices at (-5, 1), (5, 1), and (0, 8). How many points lying in its interior also have only integer coordinates?
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5) The circumference of the bowling ball is 27 inches. If the volume of a sphere is given by V = 4/3  r3,
where r is the radius, then what is the volume of the bowling ball to the nearest tenth of a cubic inch?
Use = 3.14 in your computations or give an exact answer leaving in your answer.
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1) In the diagram there are two parallel line segments and a labeled line segments R that meets the line segments at a 30 degree angle. On your answer sheet, sketch what the result is when you