The length of a hall is 8 m more than its breadth.
If the perimeter of the hall is 40 m, find the cost
of laying a carpet at the cost of 12 per sq. m.
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Answer:
Let length be 8+x and breadth be x
Perimeter of rectangle = 2(l+b) =2(8+x+x)
40 = 16+2x+2x
40-16 = 4x
24 = 4x
24/4 = x
6 = x
Length = 8+6 =14 m.
Breadth = 6 m.
Area of rectangle = l*b = 14*6= 84 m²
Cost @ ₹12 / m²
= 12 * 84
= ₹1,008
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