Question

length of a rectangle is three times it's breadth perimeter of the rectangle is 48cm find its length and breadth
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Answer 1

Step-by-step explanation:

given,

l = 3b

2(l+b)= 48

=> l+b= 24

=> 4b= 24

=> b= 6

=> l= 18

Answer 2

Answer:

let the breadth of rectangle  = x

therefore length of the  rectangle= 3x

perimeter of the rectangle = 48cm

                                2(l+b)    =48

                                2(x+3x)   =48

                                     4x     = 48/2

                                       x    = 24/4

                                         x = 6

hence breadth=x=6cm

length = 3x = 6×3 = 18cm