**5. Density of metallic foam**

Cut a rectangular piece of metallic foam and take the weight of that piece. Calculate the dimensions of piece also and find the volume of that piece:

Dimension of piece = 65 � 20 � 15 mm. Volume of piece = 1.9500 � <sup>10</sup>�<sup>5</sup> <sup>m</sup><sup>3</sup> . Weight of metallic foam piece = 8.25 g = 0.00825 kg. <sup>ρ</sup><sup>f</sup> = 0.4230 � 103 kg/m<sup>3</sup> .
