Can someone help me out with this question as I’m completely stuck

Use the numbers in the multiplication equation 45 x 1/9 =5 to write a division equation involving division by a fraction.

1. what are the missing reasons in the proof 2. it's in the second picture and 3

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.