Question

The perimerter of a rectangle is 104m and its area is 640m2 . Find its lenght and breadth

Answer 1

1. Let the length be l and breadth be b
2. area = l * b
3. 640= l* b
4. 640/b = l. (1)
5. perimeter = 2(l + b )
6. 104 = 2(l+b) (2)
7. put (1) in (2)
8. 2(640 /b + b )= 104
9. 2(1280/b)= 104. ( by taking LCM)
10. 2560/b = 104
11. 2560/104 = b
12. after finding b put value of b in (1)