geometry

posted by .

Find the surface area of a tetrahedron that has edges the length of 12 centimeters.

  • geometry -

    This site has this and many other formulas.

    http://www.mathwords.com/s/surface_area.htm

  • geometry -

    the surface area of a rectangular prism is 190 square inches, the length is 10 inches, and the width is 3 inches. Find the height

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. geometry

    Find the surface area of the solid. A right triangular prism with base edges of lengths 6, 8, and 10 and height 2
  2. Calculus/Derivitives

    A regular tetrahedron is a four sided pyramid with each side being an equilateral triangle. Let x be the length of the triangle's side. a) Prove that the surface area of a tetrahedron is V=x(cubed)(root)2/12 b) Prove that the surface …
  3. geometry

    A right cylinder has the radius of 5 centimeters and height of 22 centimeters. Round to the nearest tenth. I need to find - Find Lateral Area and Find Surface area
  4. geometry

    The surface area of a sphere is 64rr square centimeters. Find the radius.
  5. geometry

    How do I determine the length and width of a prism that has a height of 3 in, all edges are integers, the numerical values of the volume and of the surface area are equal and the volume is as small as possible?
  6. geometry

    A tetrahedron is a triangular pyramid in which each face is an equilateral triangle. Calculate the volume of a tetrahedron that has all its edges 6 cm in length. Hint: You will need to know some geometry and trigonometry.
  7. Maath

    The surface area S of the rectangular solid in the figure is S = 2(24) + 2(4x) + 2(6x). Find the length x of the box if the surface area is 248 square centimeters.
  8. math -hw help

    Determine whether the following regular tetrahedrons have an edge length that is a whole number, a rational number or irrational number. The surface are of a tetrahedron is given by the equation: SA = √ 3s^2 Surface are of regular …
  9. math( surface area )

    The height of a rectangular prism is 20 centimeters. It has a surface area of 2,400 square centimeters. What are two possible sets of lengths and widths?
  10. Problems in three dimensions

    A regular tetrahedron has sides of length s. Show that the surface area, A, of the tetrahedron can be determined using the formula A= square root of 3s^2

More Similar Questions