D If it’s not D than A sorry if I’m wrong
hi buddy i can help you with this
The answer should be "filtration" because distillation is for liquids. Filtration filters out the unwanted products.
C=2 pie r
(example circumference=28)
28=2 x 22\7 x r
28=6.29r
then divide both sides by 6.29
28\6.29=4.45
r=4.45
The answer is 10x^2y + 23xy - 5