Two rectangles G and H, not drawn to scale, overlap at J. J is the shaded area which is
12 of Rectangle G and
19 of Rectangle H. If the length of Rectangle G is 14 m and its breadth is 8 m, what is the area of the unshaded part of rectangles G and H?
| |
G |
H |
Difference |
| Total areas |
2 u |
9 u |
7 u |
| Shaded part |
- 1 u |
- 1 u |
|
| Unshaded parts |
1 u |
8 u |
7 u |
The overlapping shaded part of rectangles G and H is the same.
Area of Rectangle G
= 14 x 8
= 112 m
2 Area of Rectangle G = 2 u
Area of Rectangle H = 9 u
2 u = 112
1 u = 112 ÷ 2 = 56
Area of unshaded parts of rectangles G and H
= 1 u + 8 u
= 9 u
= 9 x 56
= 504 m
2 Answer(s): 504 m
2 
