Okay. A square pyramid has 5 faces. So a pyramid with twice that would have 10 faces. You subtract 1 for the base and you get nine. Therefore you have 9 sides. Divide 72 by 9 and you get 8. So one side is 8 ft.
The only pyramid with a square base that has equilateral faces, is one where the diagonal of the base is exactly twice as long as the pyramid is high.
triangular pyramid
The area of a square is equal to twice the square's perimeter.
A pyramid has one more corner and faces than the number of sides in its base; thus a decagonal pyramid has 10 + 1 = 11 faces and corners. A pyramid has twice as many edges as sides in its base; thus a decagonal pyramid has 2 X 10 = 20 edges.
Some do: a square 2 units on a side, for example, has area 4 units, perimeter 8.
Well, if you're talking about a square, then the perimeter is twice the length plus twice the width; in this case it would be 30 feet...
98 square feet
no Actually, yes. The four sides can be labeled A, B, C, D. Doubling each side gives 2A, 2B, 2C, and 2D. Factoring out the two gives the expression 2*(A+B+C+D). We recognize (A+B+C+D) as the perimeter of the square. 2*(the perimeter of the square) is twice the perimeter of the square.
This has several values.The perimeter is twice the sum of any two numbers whose product is 54.
The perimeter is also twice as large.
The width is half the length: The perimeter is twice the length plus twice the width. If the perimeter is 3 times the length, twice the width must be the length.
The side of the table is 12 inches long.