Whats this answer to find the area of the triangle

Answer:
Step-by-step explanation:
1/2 base x height
(40 divided by 2) x 30 =600m^2
Step-by-step explanation:
semi perimeter(s) = (30+40+50)/2
= 60
a=30 b=40 c=50
area = √s(s-a)(s-b)(s-c)
= √60(60-30)(60-40)(60-50)
= √60×30×20×10
=√360000
=600