Answer: 118.3 m^2
Step-by-step explanation:
Use Heron's formula: √s(s-a)(s-b)(s-c)
s= a+b+c/2
13+18.2+22.3/2 = 26.75
√26.75(26.75-13)(26.75-18.2)(26.75-22.3)
√26.75(13.75)(8.55)(4.45)
√13994.34609
118.297701 = 118.3 m^2
