Answer:
the answer is 0.09
Step-by-step explanation:
About 115 are pansies when you round down from the original number (115.44)
The correct answer is A. D
That is because D has a horizontal line of symmetry, as can be seen on it.
A tetrahedron is a triangular pyramid. It has four triangular faces and four vertices.
In the question, we are told that the length of the edges are all equal = 20m and the length from one corner to the center of the base = 11.5m
We sketch a diagram of a tetrahedron with the given measurement as shown below
To find the height, we will use the Pythagoras theorem
20² = h² + 11.5²
h² = 20² - 11.5²
h² = 267.75
h = √267.75
h = 16.36 (rounded to two decimal places)