The ratio of an area of two triangles is 5 : 7 and ratio of height is 7 : 5. Find the ratio of their base?
Answer & explanation
Correct answer: option 1
Area1 : Area2 = 5 : 7
⇒ \(\frac{1}{2}\) b1h1 : \(\frac{1}{2}\) b2h2 = 5 : 7
⇒ b1 × 7 : b2 × 5 = 5 : 7
⇒ b1 : b2 = 5 × 5 : 7 × 7 = 25 : 49