Evaluate ∬DdA\iint_D dA∬DdA where DDD is the region 0≤x≤1,x2≤y≤x0 \leq x \leq 1, x^2 \leq y \leq x0≤x≤1,x2≤y≤x.
1/61/61/6
1/21/21/2
1/31/31/3
1/41/41/4