Question

hey guys solve it. ​

Answer 1

Answer:

BD * CD = 144 cm

Step-by-step explanation:

Given, PQ ║ BA and PR ║ CA.

(i) From ΔBRD:

⇒ BR ║ PQ

⇒ BD/PD = RD/QD

(ii) From ΔRPD:

⇒ PR ║ CQ

⇒ RD/QD = PD/CD

From (i) & (ii), we get

⇒ BD/PD = PD/CD

⇒ PD² = BD * CD

⇒ (12)² = BD * CD

⇒ BD * CD = 144 cm.

Hope it helps!

Answer 2

Given PQ II BA and also shown clear from the figure that PQ II BR

and PR II CA, also clear that PR II CQ

Ans also PDBD = CDPD = BD × CD = PD²

BD × CD = (12)²

BD × CD = 144 cm