10- 13 if kind enough pl w work so i can actually understand

What is the area of a pizza with a radius of 40 cm leave the answer in terms of π to find your exact answer 40π cm² 1600π cm² 800π cm² 80π cm² π=pi

Me with geometry ! in this figure, bc is a perpendicular bisects of kj. dm is the angle bisects of bdj. what is the measure of bdm? •60° •90° •30° •45°

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3