Question

In an equilateral triangle PQR, PT is on altitude. Then the value of 4PT^2 is:

(al)3PQ² (c) PQ² .(b) (PQ+ QR)² (d) 2PQ²​

Answer 1

Answer:

The correct answer is option a.

Step-by-step explanation:

since PT is the altitude

PT²=PQ²-QT²

WHICH GIVES PT²=3PQ²/4

so 4PT²=4×3PQ²/4=3PQ²

HENCE ANSWER IS 3PQ²

Answer 2

Step-by-step explanation:

your answer is in the attachment hope it will helps you