Can someone help me answer these question, please?

If your house is facing the north and your facing the east, what direction is your left hand facing? a. north b. east c. south d. west what would happen if it rained on a rock almost everyday for 3 years? a. it would start to crumble b. it would start to take a natural formation c. it would stay the same : |

Simple astronomical telescope the objective lens has a focal length of 75 cm and that of a piece of 5cm of the lenses are 18 cm apart when will be final image of a distant object before

Concealer circle oh in which arc xy measures 16 pi centimeters the length of the radius of the circle is 32 cm what is the circumference of the circle