Question

Please help! Giving 20 points!! I only need number 11

Answer 1

Triangle 1:
a=1/2(175)(280)
a=24,500km^2

Triangle 2:
a=1/2(790)(480)
a=189,600km^2

189,600km^2 + 24,500km^2 = 214,100km^2

Hope this helps!