144:81 can be reduced to a 16:9 ratio.
It is: 9 to 10
The ratio is 16 to 81.
The ratio of area is 4 : 81.
ratio of areas = (ratio of sides)² ratio of sides = 3 : 5 → ratio of areas = 3³ : 5² = 9 : 25 → area larger = 81 m² ÷ 9 × 25 = 225 m²
9 x 12 = 81 9/12 = 3/4 = 0.75
The ratio is 19/9.
The ratio of their perimeters is also 45/35 = 9/7. The ratio of their areas is (9/7)2 = 81/63
The question presents a few slight irregularities: -- The unit of the '81' is unknown. Hence, any relationship that involves both the 171 and the 81 is likewise unknowable. -- A shape may be a ratio, but a size never is. -- The word is 'ratio', not 'ration'.
81 9*9=8181
9² = 9 × 9 = 81
9