math

posted by .

Number of cubic inches in volume of cube, Number of square inches in surface area of cube. which one is greater or equal?

  • math -

    Side length =L, Vol=L^3, SA=6L^2
    If L^3=6L^2 then L=6, that is for 6 inch cube, cubic in will be equal to sq inches. If side is L+a, then say
    (L+a)^3>6(L+a)^2 or L+a>6 or L>6-a. At a=0 it confirms the first result L=6; for all positive values of a, vol will be>SA, that is cubic inches will be more than sq in.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math--Volume and Surface Area

    The volume of a cube is 125 cubic inches. Find the surface area. I know that the volume formula is V=Bh where v=volume, B=area of the base, and h=height. How do I get the surface area though?
  2. Math

    Are these correct: 1a) Find the lateral surface area in square inches of the cone with the following dimensions: h= 24 in, radius = 10 in, slant height = 26 in. (Use Pi= 3.14) I didn't know how to do: Lateral Surface Area = ______ …
  3. math

    the edges of a cube are 3 inches long. what is the surface area, in square inches, of this cube?
  4. Math

    The surface area of a particular cube is 600 square inches. When the edges of the cube are doubled in length, what is the volume of the new cube, in cubic inches?
  5. Math

    The surface area of a cube is 384 square inches. What is the volume of the cube?
  6. geometry

    Liza used a cardboard cube as part of an art project. The cube has a volume of 729 square inches. Which cube might she use. one with 4inches in length, 9 inches, 10 inches, or 7 inches
  7. Calculus

    At a certain instant, each edge of a cube is 5 inches long and the volume is increasing at the rate of 2 cubic inches per minute. How fast is the surface area of the cube increasing?
  8. Algebra

    The surface area of a cube can be found using the formula A = 6s^2 where A represents the surface area of the cube and s represents the length of one edge. My teacher wants me to draw a cube that has a length of at least 5 inches. …
  9. Math calculus

    An ice cube is 3 by 3 by 3 inches is melting in such a way that the length of one of its side is decreasing at a rate of half an inch per minute. Find the rate at which its surface area is decreasing at the moment when the volume of …
  10. Algebra readiness

    A picture frame is 12 inches long and 9 inches wide. In inches, what is the diagonal length of the picture frame?

More Similar Questions