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MensurationSurface Areas and Volumes
Frustum of a Cone
Cut a cone and measure the frustum formed (like a bucket).
Controls
8 cm
15 cm
20 cm
Live result
Slant height l
21.19cm
Volume
8566.08cm³
Curved surface area
1531.09cm²
Total surface area
2439.01cm²
Frustum (bucket) — slant height & volumeSlant height l: 21.19 cm
A bucket is a frustum — volume = ⅓πh(r₁² + r₂² + r₁r₂).