Question

answer this question fastly

Answer 1

the formula of perimeter is 2(l+b)
let the breadth of the rectangle be x

the length is twice of its breadth that is 2x

according to question 2(l+b)=2(2x+x)=2*3x=54
6x=54
x=54/6=27/3=9

the value of x is 9
so the lenghth will be 2x that is 2*9=18cm



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Answer 2

Perimeter of Rectangle = 2(l+b)
l = 2b
b= b
Perimeter of Rectangle = 54cm
2(l+b) = 54cm
2(l+b)/2 = 54cm/2
l+b = 27cm
2b+b = 27cm
3b = 27cm
b = 9cm
l = 2b, l = 18cm