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well if one edge is 3cm, then that means the length of the cube is 3cm, and because a cube is a 3d square, each side is 3cm which means the volume of the cube is 3x3x3 = 273 AND the surface area us 3x3 for one side x 6 sides = 54cm2 [JxC250: The dimension isn't correct. 27 cubic cm, or cm^3, and 54 square cm, or cm^2.
3cm x 6cm x 1cm = 18 cm3
To find the volume of a box, you multiply its length, width, and height. In this case, the box is 6cm long, 3cm wide, and 4cm high. Therefore, the volume of the box would be 6cm x 3cm x 4cm = 72 cubic centimeters.
When taking the volume you do not add them you multiply them. 6cm x 5cm x 3cm = 90cm2
pi x radius x radius x height = cylinder volume. 3.1416 x 2.5cm2 x height = 58.9cm3, height = 58.9cm3 / (3.1416 x 2.5cm x 2.5cm) = 3cm