4) In math class, Abby learned that the ratio between the surface area of a cube and the area of one side is 6 to 1 . When Abby got a cube-shaped box in the mail, she decided to test this fact. The area of one side of the box was 20 square inches.
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Mind Expander
Abby’s observation is spot on! For a cube, the surface area (SA) is calculated by the formula SA = 6 * (side length)^2, and the area of one side (A) is A = (side length)^2. With the ratio being 6:1, it means that the surface area is always six times that of a single side, no matter the size of the cube. Now, if the area of one side is 20 square inches, we can find the side length by taking the square root, which gives us approximately 4.47 inches. Plugging that back into the surface area formula, Abby can confirm that the surface area should be about 53.84 square inches, fitting nicely into that 6:1 ratio. Enjoy the math!