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 1 : 9 while the shaded area is
310 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 |
9x13 |
13x9 |
1x13 |
9x13 |
3x9 |
10x9 |
13 u |
117 u |
27 u |
90 u |
The total area is repeated. Make the total area the same. LCM of 9 and 13 is 117.
Shaded area: Area of smallest square
27 : 13
Answer(s): 27 : 13