plese answer everything. A three pinned parabolic arch ABC is loaded as shown below.

$1\mathrm{.}1$ Determine the equation of the parabola

$1\mathrm{.}2$ Calculate the reactions at A & B$.$

$1\mathrm{.}3$ Calculate the coordinates of $D$ with respect to the origin $C.$

$1\mathrm{.}4$ Calculate the slope angle at D$.$

$1\mathrm{.}5$ Calculate the radial Shear and Axial Thrust at point D$.$

$1\mathrm{.}6$ Derive an equation for the Bending Moment on section AC$.$

$1\mathrm{.}7$ Calculate the maximum bending Moment on section AC$.$