This figure is not drawn to scale. It is made up of 3 squares. The ratio of the area of the smallest square to the largest square is 3 : 10 while the shaded area is
49 of the unshaded area. What is the ratio of the shaded area to the area of the smallest square?
Smallest square |
Largest Square |
Shaded area |
Unshaded area |
10x13 |
13x10 |
3x13 |
10x13 |
4x10 |
9x10 |
39 u |
130 u |
40 u |
90 u |
The total area is repeated. Make the total area the same. LCM of 10 and 13 is 130.
Shaded area: Area of smallest square
40 : 39
Answer(s): 40 : 39