Question

Three identical cubes of side 7cm are joined end to end, the volume of the cuboid so formed is​

Answer 1

Answer:

49 sq cm is the correct answer okk

Answer 2

$\displaystyle\bf{\red{Answer :-}}$

$\displaystyle\bf{Given:-}$

$\sf{Now \: length \: of \: the \: formed \: cuboid \: (l) = 7+7+7 = 21cm}$

$\sf{The \: breadth \: of \: a \: cuboid \: (b) = 7cm}$

$\sf{The \: height \: of \: a \: cuboid \: (h) = 7cm}$

$\displaystyle\bf{Formula's \: of \: a \: cuboid:-}$

$\sf{TSA=2(lb+bh+lh)}$

$\sf{LSA = 2h(l+b)}$

$\sf{Volume \: of \: a \: cuboid \: =l×b×h}$

$\displaystyle\bf{Solution:-}$

$\sf{Volume \: of \: a \: cuboid=l×b×h}$

$\sf{ = 21 \times 7 \times 7}$

$\sf{ = 147 \times 7}$

$\sf{=1029 \: cm {}^{3} }$

$\displaystyle\bf{Hence, \: The \: volume \: of \: the \: formed \: cuboid \: = \purple{1029 \: cm^{3}}}$