Approximate $\int _ { 0 } ^ { 3 } x ^ { 2 } d x$

Short Answer

Approximate $\int _ { 0 } ^ { 3 } x ^ { 2 } d x$ ; n = 4, by (a) the trapezoidal rule, (b) the midpoint rule, and (c) then find the exact value of the integral.
Enter just a, b, c where a and b are real numbers to two decimal places (rounded off), and c is an integer, all separated by commas and answering (a), (b), (c) in order but unlabeled.