math
posted by aarthi on .
The length and the breadth of a rectangle are rounded off to the nearest centimetre.The perimeter of the rectangle is 26cm.What are the possible values of its length and breadth.

L = Length
B = Breadth
P = Perimeter
P = 2 L + 2 B = 2 ( L + B )
26 = 2 ( L + B ) Divide both sides by 2
26 / 2 = 2 ( L + B ) / 2
13 = L + B Substract L to both sides
13  L = L + B  L
13  L = B
B = 13  L
1.)
L = 1 cm
B = 13  1 = 12 cm
2.)
L = 2 cm
B = 13  2 = 11 cm
3.)
L = 3 cm
B = 13  3 = 10 cm
4.)
L = 4 cm
B = 13  4 = 9 cm
etc.