如何计算Ellipse Area
learn.whatIsHeading
An ellipse is an oval shape defined by two radii: semi-major axis (a) and semi-minor axis (b). Area calculation is simpler than circumference, using a straightforward formula.
公式
Area = π × a × b where a is semi-major axis and b is semi-minor axis
分步指南
- 1Enter semi-major axis a
- 2Enter semi-minor axis b
- 3Multiply π × a × b
例题解析
输入
a = 8 cm, b = 5 cm
结果
Area ≈ 126 cm²
π × 8 × 5 ≈ 126
常见错误注意事项
- ✕Using major/minor diameter instead of semi-axes
- ✕Forgetting the π constant
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