The cross-section of a rectangular parallelopiped wooden log of 2m. length is a square and each of its side is 14 dcm. in length. If this log can be converted into a right circular log by wasting minimum amount of wood, then let us calculate what amount of wood (in m3) will be remained in it and what amount of wood (in m3) will be wasted. [Hints : The circumcircle inscribed in a rectangular figure, the length of the diameter of the circle is equal to the length of the side of the square.]
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Q. 9
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The volume of rec
Class 10th
West Bengal Board - Mathematics
4. Rectangular Parallelopiped or Cuboid
Answer :
Let the edge of a cube be a cm.
And the volume be V cubic cm.
Given, rectangular parallelepiped is converted into 2 cubes of equal area.
So, volume of each cube = = 216 sq. cm
As, a3 = volume
a = voulme1/3
So, a = 2161/3 = 6 cm.
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