Two rectangles K and L, not drawn to scale, overlap at M. M is the shaded area which is
15 of Rectangle K and
17 of Rectangle L. If the length of Rectangle K is 10 m and its breadth is 8 m, what is the area of the unshaded part of rectangles K and L?
| |
K |
L |
Difference |
| Total areas |
5 u |
7 u |
2 u |
| Shaded part |
- 1 u |
- 1 u |
|
| Unshaded parts |
4 u |
6 u |
2 u |
The overlapping shaded part of rectangles K and L is the same.
Area of Rectangle K
= 10 x 8
= 80 m
2 Area of Rectangle K = 5 u
Area of Rectangle L = 7 u
5 u = 80
1 u = 80 ÷ 5 = 16
Area of unshaded parts of rectangles K and L
= 4 u + 6 u
= 10 u
= 10 x 16
= 160 m
2 Answer(s): 160 m
2 
