Please solve 1 and 2 (write integral formula)

Volumes of solids with (non-circular) cross sections: (Optional) 1. For cross sections of area A(x) taken perpendicular to the x-axis: Volume = S." A(x) dx 2. For cross sections of area A(y) taken perpendicular to the y-axis: Volume = SA(y) dy Example: A(x) = area of trapezoids S1 S2 53 8 = XO X1 X2 b = X3 (0, 1) Optional ICE: #71 (integral formula only)