Permalink Submitted by Beebeeoii on August 25, 2017

Is this still possible for objects with an irregular shape? Because for those objects, there's no defined equation that links its surface area and volume with its radius. For example, a Pepsi bottle. The only way to find the exact volume is via integration. But how about the surface area and after that how to do dA/dr?

## Irregular objects

Is this still possible for objects with an irregular shape? Because for those objects, there's no defined equation that links its surface area and volume with its radius. For example, a Pepsi bottle. The only way to find the exact volume is via integration. But how about the surface area and after that how to do dA/dr?

All help appreciated. Thanks!