Two rectangles N and P, not drawn to scale, overlap at Q. Q is the shaded area which is
12 of Rectangle N and
17 of Rectangle P. If the length of Rectangle N is 14 cm and its breadth is 9 cm, what is the area of the unshaded part of rectangles N and P?
|
N |
P |
Difference |
Total areas |
2 u |
7 u |
5 u |
Shaded part |
- 1 u |
- 1 u |
|
Unshaded parts |
1 u |
6 u |
5 u |
The overlapping shaded part of rectangles N and P is the same.
Area of Rectangle N
= 14 x 9
= 126 cm
2 Area of Rectangle N = 2 u
Area of Rectangle P = 7 u
2 u = 126
1 u = 126 ÷ 2 = 63
Area of unshaded parts of rectangles N and P
= 1 u + 6 u
= 7 u
= 7 x 63
= 441 cm
2 Answer(s): 441 cm
2