7BOBO,<dHHHHHH,;|H,<,<q ,; -Z`@xHH(FG(HH(d'@,@`"pp/NJO l/HF.= pJ @g2,;,;dfp @p @ p @f@p @  @2f p @fJfp @p @2g,:f@F-n@7 @2gp,;!(}DSETts,<, ? @    \ ] ^ _ z { | } ~    ! "      H I J opqrs   t  j &           o r 2,<,9,:9,: ::,:Unit 8 Study Activities 1. If you want to rustproof a lawn rooler ( shown in Figure 8-5), you may want to calculate its total surface area. The roller is 2 3/4 feet wide and the raidus of one end is 11 inches. What is the total surface area of the roller? What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  2. A bale of hay has a radius of 3 feet and is 4.5 feet wide. How much does it weigh if one cubic foot of hay weighs 14 pounds? What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  3. 1. Find the toal surface area of a closed metal rectangular file box that measures 45 cm by 30 cm by 25 cm. ( Hint: Draw a sketch similar to the one in figure 8-10 in the book and label the length., width, and height of each rectangle.) 2. How many quarts of paint would it take to paint the outside of the rectangular storage tank (open at the top) shown in Figure 8-11, if one quart of paint covers 90 square feet? What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  4. The basic unit of measurement for firewood is the cord. A cord is a stack of cut wood that measures 94 feet wide, 4 feet deep, and 8 feet deep long. If the wood is tightly packed, can you figure out how many cubic feet of wood are in a cord of firewood? What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  5. Find the lateral area and the volume of the cone shown in Figure 8-15. Place figure 8-15 here What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods t:hat you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  6. If you had ordered a large ball of lead (shown in Figure 8-17) and needed to find the weight before it arrived, you could use the fact that lead weighs 712.5 pounds per cubic foot to figure the weight. The diameter of the lead ball is 6 inches. Find its weight. What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  DSET|(H@,;x7 )6*7DSET(H2p,;p7476*P7DSETR ,;D,;<,;4,;   ,;@Unit 8 Study Activities