Question

the area of a four walls of a hall is 266 sq. m the length and breadth of the hall are 12 and 7 .find the height of the wall

Answer 1

$\boxed{\boxed{\large\mathbf{h = 7m}}}$
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$\large\textbf{Given - }$

$\textsf{Area of 4 walls of a rectangular Hall}$
$\mathsf{ = 266m^2}$
$\textsf{Length of wall = 12 m}$
$\textsf{Breadth of Rectangle = 7 m}$

$\large\textsf{To Find -}$

$\textsf{Height of wall}$
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$\underline{\textsf{Using the Formula,}}$

$\large\mathsf{Area \: of \: 4 \: walls = 2(l + b)h}$

Substituting the values, We get,

$\mathsf{=> 2(12 + 7)h = 266}$

$\mathsf{=> 2(19)h = 266}$

$\mathsf{=> 38h = 266}$

$\mathsf{=> h = \frac{266}{38}}$

$=> \large\boxed{\mathbf{h = 7}}$

$\textsf{Hence, the height of the walls is 7m.}$