A good formula that I use for triangles is A=bh divides by 2. If you substitute it would be 192=b12 divided by 2. Divide 12 with two or multiply 12 with 1/2(same answer). You divide 192 with 6 because that is the answer of 12 divided by 2. You should get 32. If you multiply 32 with 12 then divide by 2 or multiply 1/2 you should get 192. The answer is 32. I hope that makes sense:)
