Do the ratios 5:10 and 1:2 form a proportion? yes no

Is it true or false i’m trying to pass this test so i can leave school

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

What is the ratio of the length of an object in yards to the length of the same object in miles?