Question

A rectangular room is 2.4 m high. The room is 4m long and 3m wide.The Windows take up an area of 9m. 1.Calculate the total walk area of the room
2.One roll of wallpaper covers 6m. Calculate how many rools of wallpaper you need to cover the wall of the room

Answer 1

Answer:

Step-by-step explanation:

h = 2.4 m

l = 4 m

b = 9 m

(i) Total walk area of room  = total area of base

     Total area of base =

= l x b

= 4 x 9

= 36 $m^{2}$                  

(ii) walls to be covered = 4 (excluding the roof )( its obvious y roof ??)

   area covered by 1 roll = 6 $m^{2}$      

   area of one wall =  2(h x l) +2(b x l)

   = 2( 2.4 x 4 )+ 2( 9 x 4 )

   = 2(9.6) + 2(36)

   =  19.2 +  72

   =  91.2 $m^{2}$

  area covered by one window = 9 m^{2}

  total area of wallpaper required will be = 91.2 - 9

                                                                    = 82.2

therefore : no of rolls of wallpaper required will be :

=   $\frac{82.2}{6}$

=  13.7

approximately 14 rolls

HOPE YOU ARE HAPPY

*ANSWER MIGHT BE DIFF. COZ NO OF WALLS WERE NOT MENTIONED*