Sides of parallelogram is in the ratio 4 : 3 and its area is 462 units. Altitude on greater side is 21 units , then altitude on the other side will be?
Answer & explanation
Correct answer: option 4
For this parallelgram DE, DF are two altitudes ;
Let AB = 4R and BC = 3R and DE = 21
Area of parallelgram = base × height
⇒ AB × DE = BC × DF
⇒ 4R × 21 = 3R × DF
⇒ 4 × 21 = 3 × DF
⇒ DF = 28