area of triangle using 3d vectors
can someone explain how to do this problem, i got the first part correct but i dont understand how to get the area exactly. THanks!
Consider the points below. P(1, 0, 0), Q(0, -2, 0), R(0, 0, -3)
(a) Find a nonzero vector orthogonal to the plane through the points P, Q, and R.
Enter a number.
6http://www.webassign.net/wastatic/common/img/tick.pngi + Enter a number.
-3http://www.webassign.net/wastatic/common/img/tick.pngj + Enter a number.
(b) Find the area of the triangle PQR.
Enter an exact number as an integer fraction or decimal.
NVM I FIGURED IT OUT THANKS FOR LOOKING AT IT!!