Respuesta :

23(24) = 552

32 - 24 = 8

split the top triangle in half
23/2 = 11.5
11.5 + 10 = 21.5

a = ab/2
A = (8)(21.5) / 2
A = 86

86 + 86 + 552 = 724

the area is 724 mm^2