- Solution of buckets and tank problem
This online calculator find a solution to the question how to fill tank with certain amount of water using two buckets of different size

- Solution of nonhomogeneous system of linear equations using matrix inverse
Solution of nonhomogeneous system of linear equations using matrix inverse

- Solution of quadratic equation
Solution of quadratic equation, including complex roots

- Solving limit problems using L'Hospital's Rule
Solving 0/0 and ∞/∞ limit problems using L'Hospital's Rule.

- Sphere

Solution of a system of 3 linear equations with 3 variables

- Spherical cap and spherical segment
This calculator computes volume and surface area of spherical cap and spherical segment

- Student t-distribution
Calculates cumulative distribution function value and probability density function value for Student t-distribution. Quantile calculator evaluates Student quantiles for given probability and specified number of degrees of freedom.

- Tank volume
Calculator computes tank volume given its length, diameter and walls depth. Created by user's request.

- The diagonals of a parallelogram
Calculator computes the diagonals of a parallelogram and adjancent angles from side lengths and angle.

- The greatest common divisor and the lowest common multiple of two integers
This calculator finds the greatest common divisor (GCD) and the lowest common multiple (LCM) of two integers

- The greatest common divisor of two integers
This calculator determines the greatest common divisor of two integers using Euclidean algorithm

- Torus
Volume and surface area of torus.

- Total square
This calculator calculates total square as sum of squares of entered rectangles

- Total volume
This calculator calculates total volume as sum of volumes of entered rectangular parallelepipeds.

- Triangle angles for given triangle sides
This calculator computes triangle angles for given triangle sides using cosine law

- Trigonometric functions
This online calculator computes the values of elementary trigonometric functions, such as sin, cos, tg, ctg, sec, cosec for an angle, which can be set in degrees, radians, or grads.

- Usable volume of tank
This calculator find usable volume of tank, taking into account wall thickness

- Values of one-variable function
This online calculator calculates values of one-variable function given function formula and set of variable values

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