Respuesta :

Answer:

313.3 mm²

Step-by-step explanation:

A = Al + Ab

= Pb×ap/2 + 43.3mm²

= 30mm×9mm + 43.3mm²

= 270mm² + 43.3mm²

= 313.3 mm²

amna04352

Answer:

178.3 mm²

Step-by-step explanation:

3[½ × 9 × 10] + 43.3

135 + 43.3

178.3

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