Hey there,
Your question states: <span>How did the calculation of pi help mathematicians during the Gupta period?
My best guess that I would give would be the option B. </span><span>
The value of pi helped them explain that Earth is a rotating sphere. Because they used the </span>

to help them, just as we use that in math.
Hope this helps.
~Jurgen
<span>Yes, a person's ability to recover from or adapt to difficult times and is a key aspect to thriving. If a person does not have this ability, they will remain very affected by the pain that they experienced. The only way to truly thrive after experiencing trauma is to try and let go and/or move on. If you don't, you may remain stuck in the past and it will become harder to enjoy the present and the future.</span>
Answer: The most logical initial action is to " Check the result obtained with a leaner setting of the mixture". Option A is most correct.
Explanation: in a carburetor engines, roughness of the engine is always caused by the mixture of air and fuel differences in the cylinders. When this is noticed during elevation. The first thing a pilot need to do first is to check the mixture of air and gas applied to the leaning settings. Then enrich the mixture of air and fuel gently, this is done by reducing the density of air, until the engine start running smoothly.
If the mixture of air and fuel is over leaned the RPM will begin to drop, which will lead to roughness in the engine