7th Grade Challenging Math

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7-17) Answer

a) 16, See the picture

b) 1 cube has surface area of (2 x 2) x 6 = 24 square cm; 4 cubes have surface area of 24 x 16 = 384 square cm

c) 4 x 4 x 8 = 128 cubic cm, (same as the volume of the original prism)