Question

Find the LSA and volume of a cuboid of dimension 12cm x 11 cm x 8.5 cm

Answer 1

$\underline{\bold{ANSWER}}$

$\fbox{\textsf{L.S.A = 391cm ^{\textsf{2}} }} \:\fbox{\textsf{Volume = 1402.5cm ^{\textsf{3}} }}$

$\underline{\bold{EXPLANATION:}}$

$\textsf{Dimensions of Cuboid: \textbf{12cm \textsf{x} 11cm \textsf{x} 8.5cm}}$

$\colon \to \textbf{To find the L.S.A. of Cuboid :}$

  $\bullet \textbf{ L.S.A. of Cuboid = 2(l + b)h}$

$\star \texttt{ Length = 12cm} \\ \star \texttt{ Breadth = 11cm} \\ \star \texttt{ Height = 8.5cm}$

$\to \textsf{L.S.A = 2 x (12 + 11) x 8.5} \\ \to \textsf{23 x 17} \\ \textsf{= 391}$

$\therefore \textbf{L.S.A. of Cuboid = 391cm ^{\textbf{2}} }$

$\colon \to \textbf{To find the Volume of Cuboid :}$

  $\bullet \textbf{ Volume of Cuboid = l \textsf{x} b \textsf{x} h}$

$\star \texttt{ Length = 12cm} \\ \star \texttt{ Breadth = 11cm} \\ \star \texttt{ Height = 8.5cm}$

$\to \textsf{Volume = 12 x 11 x 8.5} \\ \textsf{= 1402.5}$

$\therefore \textbf{Volume of Cuboid = 1402.5cm ^{\textbf{3}} }$