https://decimal-to-binary.com/ploschad-ellips.html?id=2

The area of the ellipse with half-axes 35 and 35 equal to 3848.338

Method for calculating the area of an ellipse:
Half-axis length a: Half-axis length b:

Ellipse

An ellipse is a closed flat curve
Ellipse area formula Ellipse area formula Through the half-axes where a,b are semi-axes

Solution:
S = π·a·b
=π·35·35
=
3848.338

a: The area of the ellipse with half-axes 35 and 35 equal to 3848.338