a.) A water tank has the shape of a cone (like an ice cream cone without ice cream). The tank is

10m high and has a radius of 3m at the top. If the water is 5m deep (in the middle) what is

the surface area of the water?

b.) A kite is 100m above the ground. If there are 200m of string out what is the angle between the

string and the horizontal. (Assume that the string is perfectly straight.)

Thanks in advance