The GCD and LCM of three numbers is 84 and 7056 respectively. If two of the numbers are 168 and 336 find the least possible value of the third number.

I know it is a simple concept but I keep on getting confused. if you could help me I would greatly appreciate it

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january. what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed. use 3.14 for π .