Almost all telescopes have a circular mirror. The area of a circle is proportional to

where

is the radius of the circle, the constant of proportionality being


Therefore the area of 150 meter telescope would be

times bigger than the area of the smaller (10 meter) telescope.
1. is D. Scientific method cannot be replaced.
2. is B.
3. is B as well.
Answer:
opposite the sun. between the Earth and the sun. rising perpendicular to the sun.
Explanation: