Geometry Questions & Answers (Compiled from UPSC, SSC ,PSC ,IBPS previous question papers)

  • The surface area of a cube is 486 Cm3. Find its volume

  • A739 Cm3
  • B529 Cm3
  • C729 Cm3
  • DNone of these
  • Explanation:

    Surface area of cube =6X (s)2

    where "s" is the side of the cube

    therefore,

    6s2=486

    hence, s2=81

    => s = 9 cm

    theefore volume = (s)3 {as all the dimensions have same length}

    =(9)3

    =729 cm3