Question

wall of a room is of dimensions 5m x 4m.It has a window of dimensions 1.5m x 1m and a door of dimensions 2.25m x 1m. Find the area of the wall which is to be painted.

Answer 1

Answer:

16.25m sq

Step-by-step explanation:

area of wall=20 m sq. area of door=2.25 m sq. area of window=1.5 m sq. = 16.25 m sq

20 – (1.5 + 2.25)  = 20 – 3.75  = 16.25 m

will be the answer hope this is helpful

Answer 2

Answer:

16.25 m sq.

Step-by-step explanation:

First calculate total area of wall(A)

i.e

LxB =5x4 =20m square

now calculate separate areas of window and door

area of window(a1)

L1xB1=1.5x1= 1.5 m square

area of door(a2)

L2xB2= 2.25x1= 2.25 m square

Now total area of door and window

A*=a1+a2= 2.25+1.5= 3.85 m squarw

Last step Total area of wall to be painted

=Total area of wall - total area of door and window

=20-3.75

=16.25 metre square

Answer