Pls help me with this math problem Asap . I will mark brainlist. Also for the other box that is marked D restate the story and use few words as possible ​

Which of the following is the correct ratio for converting kilograms to grams

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

Rationalize the denominator- 12x/√x-10