# Thales

Thales is 1 m from the hole. The eyes are 150 cm above the ground and look into the hole with a diameter of 120 cm as shown. Calculate the depth of the hole.

Result

h2 =  1.8 m

#### Solution:

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

#### To solve this example are needed these knowledge from mathematics:

Do you want to convert length units? See also our trigonometric triangle calculator. Try conversion angle units angle degrees, minutes, seconds, radians, grads.

## Next similar examples:

1. Steps
Walkway from the house to the school is 180 m long. How many more steps Michael makes than his father on the way to school, if the length of Michael's step is 60 cm and the length of his father's step is 90 cm.
2. Wood dividing
Which equation calculates the number of 1/3-foot pieces that can be cut from a piece of wood that is 7 feet long?
3. Thomas
Thomas lives 400 meters away from Samko, Robo from Thomas also 400 m and Samko from Robo 500. Anton lives 300 meters away from Robo further as Samko. How far away lives Anton from Rob?
4. Infirmary
Two thirds of children from the infirmary went on a trip seventh went to bathe and 40 children remained in the gym. How many children were treated in the infirmary?
5. Crocuses
The garden grow daffodils, crocuses and roses. 1400 daffodils, crocuses is 462 more and roses is 156 more than crocuses. How many are all the flowers in the garden?
6. 3-bracket
May be the largest angle in the triangle less than 20°?
7. Two angles
The triangles ABC and A'B'C 'are similar. In the ABC triangle, the two angles are 25° and 65°. Explain why in the triangle A'B'C 'is the sum of two angles of 90 degrees.
8. Angles 1
It is true neighboring angles have not common arm?
9. Customary length
Convert length 65yd 2 ft to ft
10. Obtuse angle
Which obtuse angle is creating clocks at 17:00?
11. Triangles
Find out whether given sizes of the angles can be interior angles of a triangle: a) 23°10',84°30',72°20' b) 90°,41°33',48°37' c) 14°51',90°,75°49' d) 58°58',59°59',60°3'
12. Similarity
Are two right triangles similar to each other if the first one has a acute angle 70° and second one has acute angle 20°?
13. N-gon angles
What is the sum of interior angles 9-gon? What is the internal angle of a regular convex 9-polygon?
14. Angles in triangle
Calculate the alpha angle in the triangle if beta is 61 degrees and 98 gamma degrees.