R reisara New member Joined Mar 2, 2019 Messages 1 Mar 2, 2019 #1 If side P = 8cm, Q = 7cm and side R = 5cm. So the area of the triangle is?

Dr.Peterson Elite Member Joined Nov 12, 2017 Messages 3,313 Mar 2, 2019 #2 Look up Heron's Formula. If you can't use that, you could use trigonometry to find an angle, and use that to find the area.

Look up Heron's Formula. If you can't use that, you could use trigonometry to find an angle, and use that to find the area.