Answer:
Speed of the glacier,

Step-by-step explanation:
Given that,
The average speed of Hubbard Glacier,

We need to find speed of advance of the glacier in m/s. As we know that,
1 meter = 3.28 feet
And

Using the above conversions, we can write the value of average speed is :

So, the speed of advance of the glacier is
. Hence, this is the required solution.