A city zoo builds an enclosure for birds in the shape of a cone with the dimensions shown. There are 42 birds contained in the e
2 answers:
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Presumably you should be doing this using calculus methods, namely computing the surface integral along 
.
But since describes a sphere, we can simply recall that the surface area of a sphere of radius 
is 
.
In calculus terms, we would first find an expression for the surface element, which is given by
So the area of the surface is
as expected.
But since
In calculus terms, we would first find an expression for the surface element, which is given by
So the area of the surface is
as expected.
The quantity is 19 from the solution in the image
