How would you find the volumes of rectangular prism or triangular prisms as soon as possible. wrong ones will be reported. or just the ones you want points best one gets 100 points or 50

Can you me find the missing length. i attached an image.

M? aoc=96 ? space, m, angle, a, o, c, equals, 96, degree \qquad m \angle boc = 8x - 67^\circm? boc=8x? 67 ? space, m, angle, b, o, c, equals, 8, x, minus, 67, degree \qquad m \angle aob = 9x - 75^\circm? aob=9x? 75 ? space, m, angle, a, o, b, equals, 9, x, minus, 75, degree find m\angle bocm? bocm, angle, b, o, c:

The sum of five and a number n is at least 12