SOLUTION: PQR is a triangle, given that /PQ/=15m, /QR/=17m and /RP/=18m. Find the area of the triangle to the nearest whole number.

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Question 1133263: PQR is a triangle, given that /PQ/=15m, /QR/=17m and /RP/=18m. Find the area of the triangle to the nearest whole number.
Found 2 solutions by ikleyn, Edwin McCravy:
Answer by ikleyn(52777)   (Show Source): You can put this solution on YOUR website!
.

Use the Heron's formula.

On Heron's formula, see the lessons
    - Proof of the Heron's formula for the area of a triangle
    - One more proof of the Heron's formula for the area of a triangle
in this site.


Answer by Edwin McCravy(20054)   (Show Source): You can put this solution on YOUR website!
Use Heron's formula:

First calculate 



Then use area formula:



Area = 118.3215957 m2

You can go here:

https://www.mathwarehouse.com/geometry/triangles/area/herons-formula-triangle-area.php

Edwin
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