Respuesta :

Answer:

Step-by-step explanation:

third side of triangle=√(20.5²-13.3²)

=√(420.25-176.89)

=√243.36

=15.6

area of side triangle=1/2×15.6×13.3

=7.8×13.3

=103.74 mm²

volume=103.74×15.6

=1618.344

≈1618.34 mm³

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