# Changing a Circle to an Oval

This calculator converts the area of a circle into an oval area of the same size

### Circle Formula's

**Radius**

R = D ÷ 2

where R = radius, D = diameter

**Area;**

A = π * D² ÷ 4

where A = area, π = 3.14159..., D = diameter

**Circumference;**

C = 2 * π * D ÷ 2

where C = circumference, π = 3.14159...., D = diameter

### Oval Formula's

AreaA = π * la * sa ; ÷ 4

**Long Axis**

La = (A / (π * (Sa ÷ 2)) * 2

where La = long axis, A = area, π = 3.14159...., Sa = short axis

**Perimeter**

S = Sa ÷ 2 , L = La ÷ 2

Pa = (S + L) * 3

Pb = ((3 * L + S) * (L + 3 * S))²

P = π * (Pa - Pb)

where P = perimeter, La = long axis, π = 3.14159...., Sa = short axis

### Circle to Oval

#### Calculation

- enter the diameter of a circle
- the length of the short axis of the oval
- number of decimal places required in results

#### Results

- radius of the circle
- the area of the circle
- the perimeter of the circle (circumference)
- the long axis length of the oval
- perimeter of the oval