The cross section below has the following elevations:

Proposed CL Elev. $=126\mathrm{.}2$dotsm.

The remaining $2$ numbers of your slope will be the first two digits of

your student number excluding leading zeros.

i$.$e Student number $0403682,$ Proposed CL Elev. $=126\mathrm{.}240m$

Stake A Elev. $=128\mathrm{.}7$dotsm.

Stake B Elev. $=123\mathrm{.}4$dotsm.

The remaining $2$ numbers of your Stake A and $B$ Elev will be the

last two digits of your student number.

i$.$e $,$ Student number $0403682,$ Stake A Elev. $=128\mathrm{.}782m$

Student number $0403682,$ Stake B Elev. $=123\mathrm{.}482m$

a$.$ Calculate the elevation of the bottom of the ditch

$\frac{?}{3\mathrm{.}5}$

b$.$ Calculate the horizontal distance from road CL to slope stake A $/3$

c$.$ Calculate the horizontal distance from road CL to slope stake B

$\frac{?}{3\mathrm{.}5}$