Question

The perimeter of ∆PQR is 28cm. If PQ + QR = 20cm, then PR = ____cm.​

Answer 1

Answer:

PR=8cm

Step-by-step explanation:

The perimeter of ∆PQR is 28cm

PQ + QR = 20cm

perimeter = PQ + QR + PR

28cm = 20+PR

28-20=PR

8=PR

PR=8cm

Answer 2

Answer:

8cm

Step-by-step explanation:

Because totally ∆pqr=28cm, pq+qr=20cm so 20-28= 8 so PR is 8cm