Answer:
240 cm^2,
Step-by-step explanation:
Use Hero's formula:
Area = √(s(s-a)(s-b(s-c)) where s = the semi-perimeter and a, b and c are the lengths of the 3 sides.
s = (16+30+34)/2 = 80/2 = 40
So the area = √(40(40-16)(40-30)40-34))
= √(40*24*10*6)
= √57600
= 240.
