CHAPTER Surface Area - School District #35

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Name: _____________________________________________________ Date: ______________ 5. Use the formula S.A. = 2 × (π × r 2 ) + (π × d × h) to calculate the surface area of each object. Round each answer to the nearest hundredth of a square unit (2 decimal places). a) d = 2.5 cm 10 cm d = r = h = Formula → Substitute → Solve → b) d = 5 cm 7 cm d = r = h = Formula → Substitute → Solve → 6. Which method do you like best for finding the surface area of a cylinder Circle your answer. Using the sum of the area of each face, like in #3 and #4. or Using a formula, like in #5. Give 1 reason for your choice. 264 MHR ● Chapter 5: Surface Area
Name: _____________________________________________________ Date: ______________ 7. Kaitlyn and Hakim each bought a tube of candy. Both containers cost the same amount. d = 8 cm Kaitlyn Hakim d = 10 cm 122 cm 85 cm CANDY CANDY a) How much plastic is needed to make Kaitlyn’s container b) How much plastic is needed to make Hakim’s container ← Formula → ← Substitute → ← Solve → Sentence: _________________ _________________________ Sentence: _________________ _________________________ c) Which container is made of more plastic ___________________________________ 8. Paper towel is rolled around a cardboard tube. Find the outside surface area of the tube. 27.5 cm r = 2 cm Sentence: ___________________________________________________________________ 5.4 Surface Area of a Cylinder ● MHR 265
Page 1 and 2: CHAPTER 5 Surface Area GET READY 22
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CHAPTER Surface Area - School District #35

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