Question

A door of length 2m breadth 1m is fitted in a wall . The length of the wall is 4.5 m and the breadth is 3.6m . Find the cost of the White washing the wall, if the rate of white washing the Wall is. Rupees 20per m2

Answer 1

Hi

see, u must find the surface area of wall first i.e. l×b=4.5×3.6

and then subtract area of soor from it i.e 2×1m^2

then multiply the area with the cost per m^2

i didnt solve it completely so that u can also practice and get much more marks then u deserve.

hope it jelps

Answer 2

Answer:

Step-by-step explanation:

length of door=2m

breadth of door=1m

length of wall=4.5m

breadth of wall=3.6m

area of wall to whitewashed= 4.5 x 3.6 - 2x1 (the area of door)

=16.2 - 2 = 14.2m^2

cost=14.2 x 20 = 284 rupees