In the cone radius is 4cm height is 3cm . find . (1) slant height (2) c.s.a (3) t> s > a (4) volume



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1 thought on “In the cone radius is 4cm height is 3cm . find . (1) slant height (2) c.s.a (3) t> s > a (4) volume<br /><br /><br /><br />c”

1. Step-by-step explanation:

   Radius of cone (r) = 4 cm

   Height of cone (h) = 3 cm

   1) Slant height of cone (l) =√r²+h²

   =√4²+3²

   = √16+9

   = √25

   = 5 cm

   2) Curved surface area of cone = πrl

   = 22/7 × 4×5

   = 440/7

   = 62.85 cm²

   3) Total surface area of cone = πr(l+r)

   = 22/7×4(5+4)

   = 22/7×4×9

   = 792/7

   = 113.14 cm²

   4) Volume of cone = 1/3πr²h

   = 1/3×22/7×4²×3

   = 22/7×16

   = 352/7

   = 50.28 cm³

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