Question

a rectangle has a perimeter of 96 cm. Its length is twice its breadth. what are its dimensions

Answer 1

Perimeter of the rectangle = 96 cm
Its length = 2 * breadth 

Let the length be x and the breadth be y


We know that  Perimeter of rectangle = 2(l+b)
                                                            = 2(2*b+b)
                                                            = 4b + 2b = 6b 
Now, 6b = 96
b = 96/6 = 16
So , l = 2*b = 32

Check = 2(l+b) 
           = 2(32+16)
           =  2*48 =96 cm

Therefore, length = 32
and breadth = 16