posted by patience daniel

q1 a cone has a base radius of 5cm and height of 12cm(a)calculate it slant height (b)calculate it total surface area,leave answer in terms of it

  1. MathMate

    base radius = r = 5 cm
    cone height = h = 12 cm
    Use Pythagoras theorem to find slant height
    slant height, L = sqrt(5²+12²)
    =sqrt(169)=13 cm

    Total surface area
    = π r²+πrL

    Substitute numerical values to get numerical answer.

  2. patience daniel

    pls help me out,dis is my first time

  3. pratik


  4. Isaac

    Pleasea help me out am stock

  5. EMEKA


  6. Anonymous

    Using pythagoras rule
    L^2/l square. 5^2 + 12^2.
    L=square of 169=13
    Slant 13cm

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