Why isn't the base of the cylinder included in the TSA of the bird bath??

### Asked by subbukum | 10th Mar, 2020, 09:29: PM

Expert Answer:

### Total Surface area of any object refers to what you can see on the outside. If you will see here, the top of the cylinder is open (since its a bird bath) and hence, its surface area need not be taken into account whereas on the other hand, at the other end we have a hemispherical depression and hence, we don't need to account for the area of base of the cylinder, but instead need to consider only the CSA of the hemisphere.

### Answered by Renu Varma | 11th Mar, 2020, 11:33: AM

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