The length and breadth of a rectangular piece of land are in the ratio of 5:3. if the total cost of fencing it at the rate of 48 per metre is rupee 19200 find its length and breadth.
Answers
Answered by
1
l=5x ; b=3x
cp=2(l+b)48
1920=2(5x+3x)48
1920=2(8x)48
1920=16x*48
16x=1920/48
16x=40
x=40/16
x=2.5
l=5*2.5=12.5meters
b=3*2.5=7.5meters
cp=2(l+b)48
1920=2(5x+3x)48
1920=2(8x)48
1920=16x*48
16x=1920/48
16x=40
x=40/16
x=2.5
l=5*2.5=12.5meters
b=3*2.5=7.5meters
Answered by
13
Length and the breadth of a rectangle are of the ratio 5:3
Cost of fencing is ₹24 per m
Total cost = 9000
Length & Breadth of the rectangle
Solution
Let,
Length = 5x
Breadth = 3x
✭ Perimeter
→ Perimeter = Total Cost/Cost per m
→ Perimeter = 9000/24
→ Perimeter = 400 m
✭ Finding x
→ Perimeter = 2(l+b)
→ 400 = 2(5x+3x)
→ 400/2 = 8x
→ 200 = 8x
→ 200/8 = x
→ x = 25
✭ Length and Breadth
→ Length = 5x = 5×25 = 125 m
→ Breadth = 3x = 3×25 = 75 m
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