Convert 52.0 hm to cm

Super ultra mega important if you can answer this correctly i will give you 100 points but if you don't answer it correctly you'll get a big report. so stay aware and have a nice day!

Which of the following circles have their centers in the third quadrant? check all that apply.

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)