# Math Help - Area of triangle

1. ## Area of triangle

Can anyone help with this? I need the area of triangle PQR. Thanks.

2. First find PR by using pythagora's theorem in the lower triangle PSR

3. OK, so how do I get the area of PQR from PR = 13?

4. Originally Posted by josephk
OK, so how do I get the area of PQR from PR = 13?
Hi josephk,

Use Heron's formula.