Question

find the area of cuboid of dimensions 80cm multiply 40cm multiply 20
cm

Answer 1

$\red{ \underline{\huge{ \underline{ \mid{ \: \: SOLUTION \: \:{ \mid}}}}} }$➡

$\bold{\underline{Given \: : }} \\ \\ \bold{ Dimention \: \: of \: \: the \: \: cuboid = 80 \: cm \times 40 \: cm\times 20 \: cm} \\ \\ \bold{\underline{To \: \: find \: : } \: \: surface \: \: area \: \: of \: \: the \: \: cuboid=?}$

$\bold{Here,} \\ \\ \bold{Length \:, \: l = 80 \: \: cm} \\ \\ \bold{Breadth \:, \: b = 40 \: \: cm} \\ \\ \bold{Height \:, \: h = 20 \: \: cm}$

$\bold{We \: \: know \: \: that,} \\ \\ \bold{Surface \: \: area \: \: of \: \: a \: \: cuboid = 2(lb + bh + hl) } \\ \\ \bold{ = 2((80 \times 40) + (40 \times 20) + (20 \times 80)) \: \: sq.cm} \\ \\ \bold{ = (2(3200 + 800 + 1600)) \: \: sq.cm} \\ \\ \bold{ =( 2 \times 5600) \: \: sq.cm} \\ \\ \bold{ = 11200 \: \: sq.cm}$

$\red{ \underline{ \underline{\huge{ \mid{ \: \: ANSWER\: \:{ \mid}}}}} }$➡

$\boxed{ \boxed{ \bold{ \pink{ \: Surface \: \: area \: \: of \: \: the \: \: cuboid = 11200 \: \: sq.cm}}}}$

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✝$\mathfrak{ \red{ \:THANKS...}}$✝