
CRUZ C. answered 05/21/19
Experienced Math Dept Chair, 7+ Years of Teaching Experience
Surface Area of a Cube = 6a2 where a is the length of each Edge of the cube.
Surface Area in this item is 216.
216 = 6a2
36 = a2 Divide both sides by 6
± 6 = a Square root both sides
6 = a The length of the edge cannot be negative.
Volume of a Cube = a3 where a is the length of each Edge of the cube.
For this item we calculated the edge, a, to be equal to 6.
Volume = 63 (Six cubed or Six to the third power)
Volume = 6 * 6 * 6 (Six times six times six) (PEMDAS or Order of Operations)
V= 36 * 6
V = 216