Calculators – Page 3 – calculatorpeak.com

Rectangle Calculator

Find a rectangle's area, perimeter and diagonal from its sides — or work backwards from the area, perimeter or diagonal to a…

Solve any triangle from three sides, two sides and the angle between them, or two angles and a side — with area,…

Solve a right triangle from any two of its measurements, including sides, angles, the altitude to the hypotenuse and both circle radii.

Find a missing side of a right triangle, or check whether three lengths form one, with the exact answer and both acute…

Enter any one of radius, diameter, circumference or area and get the other three, plus the exact value in terms of pi.

Solve two or three simultaneous linear equations, with the determinant, the elimination steps, and the parallel and coincident cases explained.

Find the slope between two points, or the angle and grade it corresponds to, along with the full equation of the line.

Find the midpoint between two points, or work backwards from a midpoint and one endpoint to find the missing endpoint.

Find the straight-line distance between two points in 2D or 3D, with the exact simplified surd as well as the decimal.

Solve a linear equation for x, with variables on one side or both, and see the degenerate cases explained rather than hidden.