Answer:
A:-1
Step-by-step explanation:
not sure what your asking..don’t think you can identify what “t” is without further explanation!
Answer is C
T = 15d +r/4 +2h
or
you can write another way
T = 15d + 0.25r + 2h
So you add 13+5=18
Then you do 144/18=8
8x13=104 8x5=40
104+40=144✅
Answer= 104 : 40
The relation is that the diameter is twice the length of the radius.
To make more proof, look at the attached image below.