Evaluate the Riemann sum for $\displaystyle {f{{\left({x}\right)}}}={4.9}-{x}^{{2}}$ over the interval $\displaystyle {\left[{0},{4}\right]}$ using eight subintervals, taking the sample points to be midpoints.

$\displaystyle {M}_{{8}}=$

Report answers accurate to 3 places. Remember not to round too early in your calculations.