In order to find out how many feathers you would need, you need to divide the total weight of 4.1×10^3 g by the weight of each feather. Without knowing the weight of each feather, it is not possible to determine the exact number of feathers required.
To find out how many feathers you would need to make a weight of 4.1×10^3 g, you need to divide the total weight by the weight of each feather. Do you have the weight of each feather available?
