Question : Given that the ratio of the altitude of two triangles is 4 : 5, the ratio of their areas is 3 : 2, the ratio of their corresponding bases is:
Option 1: 8 : 15
Option 2: 15 : 8
Option 3: 5 : 8
Option 4: 8 : 5
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Correct Answer: 15 : 8
Solution : The area of a triangle $=\frac{1}{2} \times \text{base} \times \text{height}$ Given that the ratio of the altitudes of two triangles is 4 : 5 and the ratio of their areas is 3 : 2. $\frac{\text{Area of Triangle 1}}{\text{Area of Triangle 2}} = \frac{\text{Base of Triangle 1} \times \text{Height of Triangle 1}}{\text{Base of Triangle 2} \times \text{Height of Triangle 2}}$ $⇒\frac{3}{2} = \frac{\text{Base of Triangle 1} \times 4}{\text{Base of Triangle 2} \times 5}$ $⇒\frac{\text{Base of Triangle 1}}{\text{Base of Triangle 2}}=\frac{3\times 5}{2\times 4}=\frac{15}{8}$ Hence, the correct answer is 15 : 8
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Question : The area of the two triangles is in the ratio 5 : 3 and their heights are in the ratio 5 : 7. Find the ratio of their bases.
Option 1: 3 : 5
Option 2: 7 : 3
Option 3: 7 : 5
Option 4: 2 : 3
Question : If the areas of two isosceles triangles with equal corresponding angles are in the ratio of $x^2:y^2$, then the ratio of their corresponding heights is:
Option 1: $x: y$
Option 2: $\sqrt{x}: \sqrt{y}$
Option 3: $x^3: y^3$
Option 4: $x^2: y^2$
Question : The sides of two similar triangles are in the ratio 5 : 7. The areas of these triangles are in the ratio of:
Option 1: 35 : 49
Option 2: 15 : 49
Option 3: 25 : 49
Option 4: 36 : 49
Question : If the ratio of corresponding sides of two similar triangles is $\sqrt{5}: \sqrt{7},$ then what is the ratio of the area of the two triangles?
Option 1: $\sqrt[3]{5}: \sqrt{7}$
Option 2: $25: 49$
Option 3: $\sqrt{5}: \sqrt{7}$
Option 4: $5: 7$
Question : If the ratio of the area of two similar triangles is $\sqrt{3}:\sqrt{2}$, then what is the ratio of the corresponding sides of the two triangles?
Option 1: 9 : 4
Option 2: 3 : 2
Option 3: $\sqrt[3]{3}: \sqrt[3]{2}$
Option 4: $\sqrt[4]{3}: \sqrt[4]{2}$
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