Tetrahedron

Calculate height and volume of a regular tetrahedron whose edge has a length 19 cm.

Result

h =  15.51 cm
V =  808.34 cm3

Solution:

Solution in text h =
Solution in text V =

Try another example






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

Showing 0 comments:
1st comment
Be the first to comment!
avatar




To solve this example are needed these knowledge from mathematics:

Pythagorean theorem is the base for the right triangle calculator.

Next similar examples:

  1. Cube corners
    polyhedra-truncated-cube From cube of edge 14 cm cut off all vertices so that each cutting plane intersects the edges 1 cm from the nearest vertice. How many edges will have this body?
  2. Theorem prove
    thales_1 We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
  3. Reference angle
    anglemeter Find the reference angle of each angle:
  4. Confectionery
    cukrovinky The village markets have 5 kinds of sweets, one weighs 31 grams. How many different ways a customer can buy 1.519 kg sweets.
  5. Teams
    football_team How many ways can divide 16 players into two teams of 8 member?
  6. Sequence
    a_sequence Write the first 7 members of an arithmetic sequence: a1=-3, d=6.
  7. PIN - codes
    pin How many five-digit PIN - code can we create using the even numbers?
  8. Sequence
    seq_1 Write the first 6 members of these sequence: a1 = 5 a2 = 7 an+2 = an+1 +2 an
  9. Examination
    examination The class is 21 students. How many ways can choose two to examination?
  10. Elimination method
    rovnice_1 Solve system of linear equations by elimination method: 5/2x + 3/5y= 4/15 1/2x + 2/5y= 2/15
  11. Three workshops
    workers_24 There are 2743 people working in three workshops. In the second workshop works 140 people more than in the first and in third works 4.2 times more than the second one. How many people work in each workshop?
  12. Sequence 2
    seq2 Write the first 5 members of an arithmetic sequence a11=-14, d=-1
  13. AP - simple
    sigma_1 Determine the first nine elements of sequence if a10 = -1 and d = 4
  14. Add vector
    vectors_2 Given that P = (5, 8) and Q = (6, 9), find the component form and magnitude of vector PQ.
  15. Blocks
    cubes3_1 There are 9 interactive basic building blocks of an organization. How many two-blocks combinations are there?
  16. Average
    chart If the average(arithmetic mean) of three numbers x,y,z is 50. What is the average of there numbers (3x +10), (3y +10), (3z+10) ?
  17. Line
    skew_lines It is true that the lines that do not intersect are parallel?