D2.4. Calculate the total charge within each of the indicated volumes: (a) 0.1 Ixl, lyl, Izl≤0.2: p = 1 ; (b) 0 ≤ p ≤ 0.1, 0 ≤≤,2≤ z <4; p = x³y3z3 p2z² sin 0.60; (c) universe: p₁ = e−2r/r2.