Answer:
1/9
Step-by-step explanation:
Square the number given to you....or better still.
Find the original area i.e. 6 cm × 9 cm = 54 cm2
Then find the altered area i.e. (6 ×1/3) × (9 ×1/3) = 2 × 3 = 6 cm²
Then divide and find what you need i.e. 6/54 = 1/9
