Length, breadth and height of a room are 7m, 4m and 3m respectively. It has
a door and a window of dimensions 2mx1
m and 1= xim respectively.
Find the cost of white washing the walls and ceiling of the room at the room at the rate of rupees 20 per m2
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Answer:
Length=825cm =3×5×5×11
Breadth=675cm =3×3×3×5×5
Height=450cm =2×3×3×5×5
Longest tape=HCF of 825,675 and 450=3×5×5=75cm
Therefore, the longest tape is 75cm.
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