College of Marin Study Guide for Math 95 A,B - Pearson Learning ...

Solutions to the Sample Finals 52[9.2] 26. Find the area of the triangle that has a height of 8 cm and a base of 15 cm.1 1Let A the area in sq cm. A -- bh -- • 15 • 8 60 sq cm[9.2] 27. Find the area of the trapezoid that has a height of 8 feet and the lengths ofthe parallel sides are 6 feet and 20 feet.Let A the area in sq ft.[9.3] 28. Find the circumference of the circle with a radius of 7 meters. (Use thefractional representation for p.)Let C the circumference in m. C 2pr 2 •22 ----- • 44 meters77[9.3] 29. Find the area of the circle with a diameter of 32 feet. (Use the decimalrepresentation for .)The radius, r, is one-half the diameter.21A --h b2r 32 ÷ 2 16 feetLet A the area in sq ft. A r 2 (16) 2 3.14 • 256 803.84 ft 221 ( B) -- • 8 • ( 6 20) 104 ft 22[9.6] 30. Simplify:361361 19 • 19 19[9.6] 31. In a right triangle, find the length of side a if side b is 18 and side c is 30.a 2 b 2 c 2 ; a 2 (18) 2 (30) 2 ; a 2 324 900; a 2 576; a 24[9.4] 32. Complete the following: 1 gal __________________ oz1 gal1 gal-----------14 qt 2 pt 16 oz• --------- • -------- • ------------ 128 oz1gal 1 qt 1 pt[9.4] 33. Find the volume of a cube 18 yards on a side.Let V the volume in cubic yards. V s 3 (18) 3 5832 yd 3[9.4] 34. The diameter of the base of a circular cylinder is 14 yards. The height is220 yards. Find the volume. Use p as a fraction.The radius, r, is one-half the diameter.r 14 ÷ 2 7 yardsLet V the volume in cu yd. V r 2 22h ----- ( 7) 2 220 33,880 yd 37[9.4] 35. Complete the following: 8 kg __________________ cg8 kg8 kg----------11000 g 100 cg• ---------------- • --------------- 800,000 cg1 kg 1 g[9.4] 36. Complete the following: 2 wk __________________ hr2 wk2 wk-----------17 days 24 hr• --------------- • ------------ 336 hr1 wk 1 day