I would like to know these answer of the questions.

3. [-/1 Points] DETAILS OSCALC1 6.4.171-180B.WA.TUT. Find the length of the curve f(x) = + 1 from x = 2 to x = 4. 6 2x4. [0/1 Points] DETAILS PREVIOUS ANSWERS Calculate the arc length over the given interval. In(x), [1, 9e ] 2 81e2 - 1 In (9 + 4 25. [-/1 Points] | DETAILS I OSCALC16.4.172. Find the length of the function ofx over the given interval. If you cannot evaluate the integral exactly, use technology to approximate it. (Round your answer to four decimal places.) y = x2/3 from (1, 1) to (8, 4) 8. [-/1 Points] DETAILS OSCALC1 6.5.224-228.WA.TUT. Find the total mass of a 5-m rod whose linear density function is p(x) = 12(x + 1) 2kg/m for 0 s x s 5. kg 123 Tutorial12. [0/1 Points] DETAILS PREVIOUS ANSWERS OSCALC1 6.6.256. Calculate the center of mass for the collection of masses given. m = 9 at x = 0, 1, 2, 8 11 X = 9 X