Two rectangles A and B, not drawn to scale, overlap at C. C is the shaded area which is
14 of Rectangle A and
110 of Rectangle B. If the length of Rectangle A is 11 cm and its breadth is 4 cm, what is the area of the unshaded part of rectangles A and B?
|
A |
B |
Difference |
Total areas |
4 u |
10 u |
6 u |
Shaded part |
- 1 u |
- 1 u |
|
Unshaded parts |
3 u |
9 u |
6 u |
The overlapping shaded part of rectangles A and B is the same.
Area of Rectangle A
= 11 x 4
= 44 cm
2 Area of Rectangle A = 4 u
Area of Rectangle B = 10 u
4 u = 44
1 u = 44 ÷ 4 = 11
Area of unshaded parts of rectangles A and B
= 3 u + 9 u
= 12 u
= 12 x 11
= 132 cm
2 Answer(s): 132 cm
2