Can someone solve this please: 54.69 rounded to the nearest integer

thank you <3​

Find the greatest common factor of the followig monomials 46g^2h and 34g^6h^6

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?