Divide traingle in to 5 equal areas

Puzzle:
Divide a triangle into 5 triangles of equal area

Solution:Distance between 2 poles...amazon puzzle

Solution:
The distance between poles is zero. In this case, the cable will be hanging directly down and its center be 8mts down which is half of its length.
The height of the poles are 15mts, so 15mts - 8mts = 7mts.

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Distance between 2 poles...amazon puzzle

Question:

There are two poles of equal height 15mts. One cable with length 16mts is hanging between that two poles. The height from center of the cable to earth is 7mts then what is the distance between that two poles.

Solution: Find no. of acute traingle from cube having 8 vertices

Solution:
Acute angled triangle can be formed by connecting the diagonal of three adjacent faces of the cube.
The number of ways three adjacent faces can be chosen is (6x4x2)/(3x2x1) = 8
So the total number of acute angled triangle is 8.

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Find no. of acute traingle from cube having 8 vertices

Question:
Think of the 8 vertices of a given cube. You are allowed to join three
vertices to form a triangle. How many such unique acute triangles can you
make ??