1. The area of a rhombus varies jointly as the lengths of the diagonals d1 and d2. Find the equation of joint variation if A = 24m2, d1 = 6 m, and d2 = 8m.

2. If a varies directly with the cube of b and inversely with c and a = 8 when b = 2 and c = 4. Find a when b = 6 and c = 12​