The edges of three metal cubes are 2 cm, 3 cm, and 4 cm respectively. A new cube is made by melting these three cubes together. What is the edge of the new cube (in centimeters)?	Answers.
A) 4.0 B) 4.2 C) 4.4 D) 4.6 E) 4.8
The total volume is 2^3+3^3+4^3=99   The edge of the new cube is the cube root of 99 which is about 4.6 cm.   The answer is 4.6.
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The edges of three metal cubes are 2 cm, 3 cm, and 4 cm respectively. A new cube is made by melting these three cubes together. What is the edge of the new cube (in centimeters)?