You have to construct a highway having the width of formation 'w' and height of embankment 'h'. The slope relative to the side is Y ∶ 1 having no transverse slope. Which of the following options gives the CORRECT equation for the area of cross-section?
1
wh + Yh
2
wh + Y
3
wh + Yh2
4
\(1 \over 2 \)(wh + Yh2)