Answer:
2.a..A=1/2 ×1.0×2.4=1.2m²
b.area of rectangle button=l×w=2.4×2.8=6.72m²
c.area of back =l×w=1.0×2.8=2.8m²
d.area of top =l×w=2.8×2.6=7.28m²
3.
total area =2×area of traingular side +area of rectangle button+c.area of back+area of top
=2×1.2+6.72+2.8+7.28=19.2m²
4.Assumption
total area of triangular prism is
sum of area if each faces.
