Question

14 .The floor of a room is rectangular in shape. Its length is 8m and breadth 7m. Height of the room is 4m. Find the area of the four walls of the room:-
a 180m2b) 130 m2(c) 120 m2
(d) 150 m2​

Answer 1

$\huge\rm\underline\red{GIVEN:}$

• $\large\rm{Length,Breadth\:and\:Height\:of\:room\:are\:8,7\:and\:4m}$

$\huge\rm\underline\red{TO\:FIND:}$

• $\large\rm{Area\:of\:four\:walls\:of\:Room}$

$\huge\rm\underline\red{SOLUTION:}$

$\large\rm{Length(l)\:of\:Room\:=\:8m}$

$\large\rm{Breadth\:of\:Room(b)\:=\:7m}$

$\large\rm{height\:of\:Room(h)\:=\:4m}$

$\large\rm\bold{\boxed{Area\:of\:four\:walls\:of\:room\:=\:2(l+b)h}}$

$\large\rm{\implies{Area\:of\:four\:walls\:of\:a\:room\:=\:2(8+7)4}}$

$\large\rm{\implies{Area\:of\:Four\:walls\:of\:a\:room\:=\:2(15)4=120m^2}}$

$\large\rm{\therefore{Area\:of\:four\:walls\:of\:a\:room\:=\:120m^2}}$

Answer 2

Answer:

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