Question

5. A door of 2 m by 1 m is fitted in the wall of a
room. The length and the breadth of the wall
are 5.4 m and 3.2 m, respectively. Find the
cost of painting the wall from outside only at
the rate of 150 per square metre.​

Answer 1

Step-by-step explanation:

area needed to be painted = area pf wall- area of door

therefore, area of wall = 5.4 ×3.2= 17.28m^2.

area of door=2m^2

then area needed to paint= 17.28 - 2= 15.28 m^2

• cost of painting= 15.28× 150= 2290 rupees

Answer 2

Answer:

The answer of this question is ₹2392

Step-by-step explanation:

=dimension of door =(2*1 )m

=Length of wall =5.4 m

=Breadth of wall =3.2 m

=Area of wall which has to paint =area of wall - area of door

=area should be paint=l*b - l*b

=area should be paint=(5.4*3.2 - 2*1)m^²

=area should be paint=17.28-2=15.28m^2

=cost of paint per m^2= ₹150

=cost for paint full wall =15.28*150=₹2392