Question 1087294
So bedroom 2, the perimeter is,
{{{P[2]=2(8+12)=2(20)=40}}}
So the surface area is (remember we subtract out 35% so we only need 65%)
{{{A[2]=40(8)(0.65)}}}
{{{A[2]=208}}}{{{ft^2}}}
Bedroom 3 is the same measurement as bedroom 2 so,
{{{A[3]=208}}}{{{ft^2}}}
So then the total area is,
{{{A=416}}}{{{ft^2}}}
We have to convert from ft^2 to m^2.
{{{1 ft =0.3048m}}}
.
.
{{{A=416(0.3048/1)^2}}}{{{ft^2(m/ft)^2}}}
{{{A=38.648}}}{{{m^2}}}
So then 2 rolls will cover that since that would be {{{40}}}{{{m^2}}}.
The cost would then be,
{{{C=2(170.38)}}}
{{{C=340.76}}}
If you require the exact cost of the wallpaper (assuming you can use the rest somewhere else),
{{{C=(38.648/20)170.38}}}
{{{C=329.24}}}