These are the MOST hardest questions from my book. Nobody in my class, which is an ADVANCED math honors 11 class, can get them, which is why I'm curious if it's even possible or not.

If you can answer these questions, you're definitly smarter than my whole class combined.

I'd like to know why it's that anwer because I'm curious about how to do it.

I'm clueless as to where to start. Eek!

1. Given: QR = 12 cm

<PQR = 30 degrees

Find: Area of the shaded region

2. Given: A circle is inscribed in a sector of another circle.

<A = 60 degrees, AB = 10 sqrt(3) cm

Find: Shaded area

3. A spherical tank is filled with water that is 20 ft. deep and 50 ft. wide.

What is the radius of the tank?

Note: All these are circles and a cone.