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Left & right Riemann sums

Approximate the area between h(x)h(x) and the xx-axis from x=−2x=-2 to x=4x=4 using a right Riemann sum with 33 equal subdivisions.
The graph of function h passes through the point negative 2, 0, the point 0, 4, the point 2, 6, and the point 4, 4.
R(3)=R(3) =
  • Your answer should be
  • an integer, like 66
  • a simplified proper fraction, like 3/53/5
  • a simplified improper fraction, like 7/47/4
  • a mixed number, like 1 3/41\ 3/4
  • an exact decimal, like 0.750.75
  • a multiple of pi, like 12 pi12\ \text{pi} or 2/3 pi2/3\ \text{pi}
units2^2.