Answer:
Area of the self will be 
Step-by-step explanation:
We have given that self is 4 feet wide and
feet deep
So length pf the shelf l =
feet
And width = 4 feet
We have to find the area of the self
We know that area is given by
Area = length × width
So area of the self will be 
how u dont know this stuff shhhhh on yo ahh boi
Answer:
The index of refraction of the second medium is higher.
Step-by-step explanation: