Question

how to find area of elipse​

Answer 1

Find the major radius of the ellipse. This is the distance from the center of the ellipse to the farthest edge of the ellipse. Think of this as the radius of the "fat" part of the ellipse. Measure it or find it labeled in your diagram. We'll call this value a.

Find the minor radius. As you might have guessed, the minor radius measures the distance from the center to the closest point on the edge. Call this measurement b.

This is at a 90º right angle to the major radius, but you don't need to measure any angles to solve this problem.

You can call this the "semi-minor axis."

Multiply by pi. The area of the ellipse is a x b x π. Since you're multiplying two units of length together, your answer will be in units squared.

For example, if an ellipse has a major radius of 5 units and a minor radius of 3 units, the area of the ellipse is 3 x 5 x π, or about 47 square units.

If you don't have a calculator, or if your calculator doesn't have a π symbol, use "3.14" instead.