$[-/1$ Points$]$

SCALCET$915\mathrm{.}5\mathrm{.}017.$

$($a$)$ Use the Midpoint Rule for double integrals with four squares to estimate the surface area of the portion of the paraboloid $z=3x^2+3y^2$ that lies above the square $[0,1][0,1].($Round your answer to four decimal places.$)$

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$($b$)$ Use a computer algebra system to approximate the surface area in part $($a$)$ to four decimal places. Compare with the answer to part $($a$).$

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