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Mensuration Test - 3

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Mensuration Test - 3
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Weekly Quiz Competition
  • Question 1
    1 / -0

    The volume of a cube with edge 6 m is _____.

    Solution

    Volume of cube = a3 ( `a` is the edge of the cube.)
    ∴ Volume of cube = a3
    = (6)3
    = 6 × 6 × 6
    = 216 m3

     

  • Question 2
    1 / -0

    The dimensions of a cuboidal box are 2 m ×" 3 m ×" 4 m. The lateral surface area of the box is equal to ______.

    Solution

    Lateral surface area = 2h (l + b)
    = 2 × 4 (2 + 3)
    = 8 (5)
    = 40 m2
    [∵ l = 2m, b = 3m, h = 4m]

     

  • Question 3
    1 / -0

    If the length, breadth and total surface area of a cuboid are 3 cm, 4 cm and 94 cm2 respectively, the height of the cuboid is equal to ______.

    Solution

    Length = 3 cm
    Breadth = 4 cm
    Total surface area = 2 (lb + bh + lh)
    94 = 2 (12 + 4h + 3h)
    94/2 = 12 + 7h
    47 – 12 = 7 h
    35 = 7 h
    h = 5 cm

     

  • Question 4
    1 / -0

    The total surface area of a cube of edge 1.1 m is

    Solution

    Total surface area (TSA) of the cube = 6a2, where 'a' is the edge of the cube.
    TSA of the cube = 6 × (1.1 m)2
    = 6 × 1.21 m2
    = 7.26 m2

     

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