Question

5. Find the area of a triangle if its sides are

(ii) 17 cm, 25 cm and 26 cm
​

Answer 1

Answer:

A=s(s﹣a)(s﹣b)(s﹣c)

s=a+b+c

2

Solving forA

A=1

4﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=1

4·﹣174+2·(17·25)2+2·(17·26)2﹣254+2·(25·26)2﹣264=204cm²