Question 1108682
Each wallpaper roll measures:
{{{ 7*3 = 21 }}} ft long
{{{ 24/12 = 2 }}} ft wide
area = {{{ 2*21 = 42 }}}
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The wording is confusing, but it sounds
like they want the area of all 4 walls
2 opposing walls:
{{{ 2*12.6*9 = 226.8 }}}
The other 2 opposing walls:
{{{ 2*14*9 = 252 }}}
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{{{ 226.8 + 252 = 478.8 }}}
{{{ 478.8 - 144 = 334.8 }}}
{{{ 334.8/42 = 7.97 }}}
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8 rolls of wallpaper are needed
check the math & get another opinion if needed