Question

Adoor of length 2.2m and breath 0.9mis fitted in a wall the dimensions of the wall are 5m and 3.5 m find the cost of white washing the wallat $35 per sq m

Answer 1

Area of wall=5×3.5=17.5 sq m
Area of door=2.2×0.9=1.98 sq m
Area of wall to be white washed=17.5-1.98=15.5 sq m
cost of white washing=$35×15.5=$1212.75