Can someone please help me with this

12 inches

Step-by-step explanation:

a^2 + b^2 = c^2

a=16

b=?

c=20

16^2 + b^2 = 20^2

256 + b^2 = 400

400 - 256 = b^2

144 = b^2

Square root 144 = b

12 = b

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.