Question

the length of a cuboid is 4m,width is 5m and hight is 12m. what is its volume and surface area.​

Answer 1

Step-by-step explanation:

Volume is 240 metre cube

area is 280 metre square

Answer 2

$\huge\mathbb{SOLUTION:-}$

$\bf{Given:-}\begin{cases}\sf{Dimensions\:of\: cuboid}\\ \sf{l= 4m\: b=5m\:h=12m}\end{cases}$

We hae to find Volume and T.S.A of cuboid

$\boxed{\sf{Volume\:of\:cuboid=l\times b\times h}}$

$\sf:\implies Volume=4\times 5\times 12\\ \\ \sf:\implies Volume=20\times 12\\ \\ \sf:\implies {\blue{Volume=240m{}^{3}}}$

$\boxed{\sf{T.S.A\:of\:cuboid=2(lb+bh+hl)}}$

$\sf:\implies T.S.A=2(4\times 5+5\times 12+12\times 4)\\ \\ \sf:\implies T.S.A=2(20-60+48)\\ \\ \sf:\implies T.S.A= 2\times 128\\ \\ \sf:\implies {\purple{T.S.A=256m{}^{2}}}$

$\boxed{\sf{T.S.A=256m{}^{2}}}$

$\boxed{\sf{Volume=240m{}^{3}}}$