consider the area of a plane in first octant where a,b,c,d are postive real numbers
show that the area is [d2 sqrt(a2+b2+c2)] / 2abc
ax+by+cz = d
The Attempt at a Solution
ok i tried to search for formulas for areas of planes but there seem to be none !
i found one at paula's calculus notes that is about using surface integrals but it seems not for this problem?
can anyone point me to the right direction? thanks!