Find the circumferences of both circles to the nearest tenth.
I need to know
how much the circumference of the blue circle is about and how much The circumference of the orange circle is about .
please and thank you!

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?