The length of a rectangle is twice its breadth. If its perimeter is 78 cm find its length and breadth.
Answers
Answered by
20
The perimeter of a rectangle is given by the formula 2*L + 2*B, where L is the length and B is the breadth.
Since L = 2*B, we can substitute this in the above equation to find the perimeter.
Thus, 2*2*B + 2*B = perimeter. Given perimeter is 78, we get
78 = 4*B + 2*B = 6*B.
Or B = 78/6 = 13.
And length L = 2*13 = 26cm.
Thus, the Length = 26cm and Breadth = 13cm.
Since L = 2*B, we can substitute this in the above equation to find the perimeter.
Thus, 2*2*B + 2*B = perimeter. Given perimeter is 78, we get
78 = 4*B + 2*B = 6*B.
Or B = 78/6 = 13.
And length L = 2*13 = 26cm.
Thus, the Length = 26cm and Breadth = 13cm.
Similar questions