Answer:
30 days (do correct me if I'm wrong haha)
Step-by-step explanation:
5 gallons = 2 days
75 gallons = 30 days
75÷5=15 15×2=30
The new pool is 18.84 feet larger in circumference than the old one.
<u>Explanation:</u>
Given:
Circumference of the pool = 47.1 feet
Diameter of the new pool, d = 21 feet
radius, r = 21/2 feet
Circumference of the new pool = ?
We know:
Circumference = 2πr
where,
r is the radius
On substituting the value:
C = 
C = 65.94 feet
The difference in circumference of the two pools = 65.94 - 47.1 feet
= 18.84 feet
Therefore, the new pool is 18.84 feet larger in circumference than the old one.
300²+400²=500² is your answer
a²<span> + b</span>²<span> = c</span>²