What is The measure of the radius, C, rounded to the nearest inch? Use appropriate trigonometric ratios to solve

Select the sequences that are geometric.

Which angle has the same measure as the dehedral angle formed by the orange face and the purple rectangle

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?