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19 February, 08:34

Find the volume & surface area of a cylinder with radius 4 cm and height 9 cm

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  1. 19 February, 10:45
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    V = 452.39cm³ (to 2 d. p.)

    S. A. = 326.73cm² (to 2 d. p.)

    Step-by-step explanation:

    Vcylinder = π r² h = π (4) ² (9) = 144 π = 452.3893421cm³ = 452.39cm³ (to 2 d. p.)

    S. A. cylinder = 2π r h + 2π r² = 2π (4) (9) + 2π (4) ² = 104π = 326.725636cm² = 326.73cm² (to 2 d. p.)
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