CHAPTER Surface Area - School District #35

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Name: _____________________________________________________ Date: ______________ Working Example 2: Use the Surface Area of a Cylinder Find the surface area of the totem pole. Include the area of the 2 circular bases. The pole is 2.4 m tall and has a diameter of 0.75 m. Give your answer to the nearest hundredth of a square metre (2 decimal places). Solution Draw a diagram and label the dimensions. d = r = d ÷ 2 h = = ÷ 2 = 0.75 m 2.4 m The cylinder has 2 circular bases. The area of 1 circle = π × r 2 = 3.14 × = m 2 Area of 2 circles = 2 × 0.4415625 2 0.75 m = m 2 The side of the cylinder is a rectangle. Area of rectangle = (π × d) × h ≈ 3.14 × × ≈ m 2 l = π d h = 2.4 m A = _____ A = _____ A = _____ S.A. = area of 2 circles + area of 1 rectangle = + = Round your answer to the nearest hundredth (2 decimal places.) The total surface area is approximately m 2 . 260 MHR ● Chapter 5: Surface Area
Name: _____________________________________________________ Date: ______________ Find the surface area of a small cylindrical garbage can without a lid. The height is 28 cm and the diameter is 18 cm. Give your answer to the nearest square centimetre. Draw a cylinder and label the dimensions: d = r = h = Area of circular base: Formula → Substitute → Solve → Area of rectangle: Formula → Substitute → Solve → Total surface area: Sentence: _____________________________________________________________ 5.4 Surface Area of a Cylinder ● MHR 261
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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