Pool a has a greater circumference because 12*2= `14
So, 14 equals the diameter.
7.5 is the diameter of pool b.
Multiply both by pi.
pool a equals 43.96
pool b equals 23.55.
Hope this helps! :)
Answer:
20.5a
Step-by-step explanation:
- 18a + 2.5a = 20.5a
I hope this helps!
Answer:
∑ₙ₌₁⁸ (3n − 9)
Step-by-step explanation:
This is an arithmetic series where the first term is -6 and the common difference is 3. The nth term can be written as:
aₙ = a₁ + d (n − 1)
aₙ = -6 + 3 (n − 1)
There are 8 terms in this series, so the sum is:
∑ₙ₌₁⁸ [-6 + 3 (n − 1)]
Simplified:
∑ₙ₌₁⁸ (3n − 9)
