AWARDING 30 POINTS HELP MY EXAM STARTS SOON AND I NEED TO KNOW HOW I GOT THIS ANSWER ILL GIVE BRAINLIEST

If the variance of the brain volume data is 17,689cm^6, what is the standard deviation? Answer is 133 how did they get that??

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is