A1= π · r²
A1= 3,1416 · 6,4cm²
A1= 20,10624cm²
A2= b · h/2
A2= 2,5m · 5,6m/2
A2= 14cm²/2
A2= 7cm²
AT= A1 - A2
AT= 20,10624cm² - 7cm²
AT= 13,10624
