Question

a door of length is 4 m and breadth is 3 m is fitted in the wall the length of the wall is 15.4 m and breadth is 13.6m find the remaining area of the wall also find the cost of whitewashing the wall at the rate of rs 20 per metre square

Answer 1

door area =4m×3m = 12m^2
area of wall =15.4×13.6 =209.44m^2
remaining area =209.44m^2-12m^2 =197.44m^2
cost of whitewashing=197.44×20=3948.80

m^2 means metre square

Answer 2

1. door area= 4m*3m=12m²
2. area of the wall= 15.4*13.6=209.44m²
3. remaining area=209.44m²=197.44m²
4. cost of white washing =197.44m*20=948.80
5. * means multiplication