In the figure at right, EX is tangent to ⊙O at point X. OE=20.0 cm and XE=15.0 cm.
a. What is the area of the circle?
b. What is the area of the sector bounded by OX¯ and ON¯?
c. What is the area of the region bounded by XE, NE, and arc NX?

Graph the equation by plotting point x=2

If you answer right ill give brainliest, : )

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)