Arectangular prism is 6 inches long, 3 inches wide, and 2 inches high. what is its surface area?

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

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