Surface Area of Solids — O/L Mathematics

How do I practise Surface Area of Solids?

1 question with a worked solution

1. A closed cylinder has a radius of 7 cm and a height of 10 cm. Using π = 22/7, calculate the total surface area of the cylinder.
   1. A) 880 cm²
   2. B) 594 cm²
   3. C) 748 cm²
   4. D) 440 cm²
   Check my answer

   Correct answer: C) 748 cm²

   Total surface area = 2πr(r + h) = 2 × (22/7) × 7 × (7 + 10) = 44 × 17 = 748 cm².

   Show worked solution

   Step 1: Formula for closed cylinder: A = 2πr² + 2πrh = 2πr(r + h). Step 2: Substitute r = 7 cm, h = 10 cm, π = 22/7. Step 3: A = 2 × (22/7) × 7 × (7 + 10) = 44 × 17 = 748 cm². Answer: 748 cm².
   Modelled on: the O/L Mathematics examination pattern

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Where does Surface Area of Solids fit in the syllabus?

Grade 11 · Term 1