Use this equation :
al=2(pi)rh
Answer:
∴73,563 calls are made between two cities with populations of 100,000 and 160,000 that are 435 miles apart.
Step-by-step explanation:
Given that,
The number of phone calls between two cities (N )
- directly proportional as the value of populations
and
of two cities. - Inversely varies as the magnitude of distance (d).


Given that,
N=18,000, d=310 miles,
=15,500 and
=180,000



Now,
N=? , d=435 miles,
=100,500 and
=160,000


∴73,563 calls are made between two cities with populations of 100,000 and 160,000 that are 435 miles apart.
1 pound (lb) is in 16 ounces (oz).
X=3
Explanation :-
20/5=4
8/2=4
They are both 4 so you will do
(5x-11)=4
-11+11=0
4+11=15
5x=15
15/5=3
x=3
Hope it helps