40.583333 is the answer.
I hope this helps!
Step 1: Isolate the variable term (the x and its coefficient (the number in front of it))
Step 2: Get the variable alone
and thats your answer :)
Step-by-step explanation:

Value 1:
r = 5ft, h = 10ft. Substitute:

Value 2:
r = 2in, h = 4in. Substitute:

Value 3:
r = 6m. Substitute:

Answer:
Deandre runs 4 miles in 30 minutes
Deandre runs 1 mile in 30/4 minutes=7.5minutes
Deandre runs 4x7.5 miles in 48 minutes
=30miles
Step-by-step explanation: