Suppose ΔABC be a right-angled triangle where ∠A = 90° and AD ⊥ BC. If area (ΔABC) = 80 cm2 and BC= 16 cm, then the length of AD is:
Answer & explanation
Correct answer: option 1
As ΔABC , BC = base of ΔABC and AD = Height of ΔABC
According to the question,
⇒ \(\frac{1}{2}\) x AD X BC = area(ΔABC)
⇒ \(\frac{1}{2}\) x AD X 16 = 80
⇒ AD = 10 cm.
Therefore, AD is 10 cm.