Question

16. A door of length 4 m and breadth 3 m is fitted in a wall. The length of the wall is 16
and the breadth of the wall is 13 m 9 cm. Find the cost of whitewashing the wall.​

Answer 1

Area of door = (4×3) m

= 12m^2

Area of wall= (16×13.09)m

= 209.44m^2

Area of remaining wall to be white washed=209.44-12

=197.44m^2

Now, just multiply the cost per m^2, remember to first change breadth of wall fully in m