What is the square root of 605 simplified

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

If you flip a coin 3 times, what is the probability of flipping heads 3 times? a. p(3 heads) = 3/8 b. p(3 heads) = 1/6 c. p(3 heads) = 1/8 d. p(3 heads) = 1/2