Circumradius of Rectangle given Length and Acute Angle between Diagonals Calculator

Calculate Circumradius





Formula

The formula to calculate the circumradius of a rectangle given its length and the acute angle between the diagonals is:

\[ \text{Circumradius} = \frac{\text{Length}}{2 \cdot \cos\left(\frac{\text{Acute Angle}}{2}\right)} \]

Definition

The circumradius of a rectangle is the radius of the circle which contains the rectangle with all the vertices of the rectangle lying on the circle. The acute angle between the diagonals of the rectangle is the angle made by the diagonals which is less than 90 degrees.

Example Calculation

Let's assume the following values:

Using the formula:

\[ \text{Circumradius} = \frac{8}{2 \cdot \cos\left(\frac{1.2217304763958}{2}\right)} \approx 4.8831 \, \text{meters} \]

The circumradius is approximately 4.8831 meters.

Conversion Chart

Length (meters) Acute Angle (radians) Circumradius (meters)
6 1 3.418481781973647
6 1.1 3.518960361108066
6 1.2 3.634884943536950
6 1.3 3.768447499456473
6 1.4 3.922377779200783
7 1 3.988228745635922
7 1.1 4.105453754626078
7 1.2 4.240699100793109
7 1.3 4.396522082699219
7 1.4 4.576107409067579
8 1 4.557975709298196
8 1.1 4.691947148144089
8 1.2 4.846513258049267
8 1.3 5.024596665941965
8 1.4 5.229837038934376
9 1 5.127722672960471
9 1.1 5.278440541662100
9 1.2 5.452327415305426
9 1.3 5.652671249184710
9 1.4 5.883566668801174
10 1 5.697469636622746
10 1.1 5.864933935180111
10 1.2 6.058141572561584
10 1.3 6.280745832427455
10 1.4 6.537296298667971