Find the area of the shape. Either enter an exact answer in terms of or use 3.14 for it and enter your answer as a decimal.

How do you do this geometry problem

Of four points are collinear, they are also coplanar

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).