Practice problems of the triangleA triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. The sum of the measures of the interior angles of a triangle is always 180 degrees. An exterior angle of a triangle is an angle that is a linear pair (and hence supplementary) to an interior angle. The best known area formula is T = a*h /2 where a is the length of the side of the triangle, and h is the height or altitude of the triangle.
Number of problems found: 1331
- Pentagonal pyramid
Calculate the volume of a regular 5-side (pentaprism) pyramid ABCDEV; if |AB| = 7.7 cm and a plane ABV, ABC has angle 37 degrees.
We known heights 220, 165, and 132 of sail. It has a triangular shape. What is the surface of the sail?
- 4s pyramid
Regular tetrahedral pyramid has a base edge a=17 and collaterally edge length b=32. What is its height?
- Body diagonal
Calculate the length of the body diagonal of the 6cm cube.
I have homework. The cube has an edge 7 cm long and I must find wall and body diagonal.
The funnel has the shape of an equilateral cone. Calculate the surface wetted with water if we poured into the funnel 7.1 liters of water.
- Earth's circumference
Calculate the Earth's circumference of the parallel 48 degrees and 10 minutes.
- Cube diagonal
Determine the length of the cube diagonal with edge 37 mm.
Calculate length of the vector v⃗ = (9.75, 6.75, -6.5, -3.75, 2).
- Sphere cuts
At what distance from the center intersects sphere with radius R = 91 plane, if the cut area and area of the main sphere circle is in ratio 3/6.
- Spherical cap
What is the surface area of a spherical cap, the base diameter 23 m, height 3 m.
See also our trigonometric triangle calculator. See also more information on Wikipedia.