And what's the problem with Geometry?
<span>Step–1:Find a perfect square root as close to your number.
</span><span>Step–2: Divide your number by the square root.
</span><span>Step–3: Calculate the average of the result given in step 2 and the root.
Step-4: Simplify if needed. </span>
Answer:
r = 1/3
= 1
Step-by-step explanation:
1 + 1/3 + 1/9 + 1/27 + 1/ 81
In this series a is the first term = 1
r is the common ratio = 2nd term/1st term = 3rd term/ 2nd term
r = 1/3 ÷ 1 = 1/9 ÷ 1/3
r = 1/3
I hope this was helpful, please mark as brainliest
