Two rectangles K and L, not drawn to scale, overlap at M. M is the shaded area which is
13 of Rectangle K and
19 of Rectangle L. If the length of Rectangle K is 15 m and its breadth is 3 m, what is the area of the unshaded part of rectangles K and L?
| |
K |
L |
Difference |
| Total areas |
3 u |
9 u |
6 u |
| Shaded part |
- 1 u |
- 1 u |
|
| Unshaded parts |
2 u |
8 u |
6 u |
The overlapping shaded part of rectangles K and L is the same.
Area of Rectangle K
= 15 x 3
= 45 m
2 Area of Rectangle K = 3 u
Area of Rectangle L = 9 u
3 u = 45
1 u = 45 ÷ 3 = 15
Area of unshaded parts of rectangles K and L
= 2 u + 8 u
= 10 u
= 10 x 15
= 150 m
2 Answer(s): 150 m
2 
