two adjacent angle of a parallelogram are in ratio 4:5 tf the perimeter of parallelogram is 54 cm. find the length of the it side
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formula of perimeter of parallelogram is 2(a+b)
so the adjacent sides are in proportion 4:5
let common multiple be x
4x:5x
length =4x & breadth =5x
put in formula
2(4x+5x) =54.... perimeter of parallelogram
2(9x)=54
18x=54
x=54/18
x=3
length=4x
=4(3)
=12 cm
so the adjacent sides are in proportion 4:5
let common multiple be x
4x:5x
length =4x & breadth =5x
put in formula
2(4x+5x) =54.... perimeter of parallelogram
2(9x)=54
18x=54
x=54/18
x=3
length=4x
=4(3)
=12 cm
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