To find the area of a kite, you multiply the lengths of the diagonals by each other and divide by 2. All we need to do is fill in the information in the formula and solve for the missing side.
A = pq/2
384 = (x(3x))/2 768 = 3x^2 256 = x^2 16 = x
Now, just multiply this diagonal of 16 by 3 to find the other diagonal of 48.
