Question

3 cubes each volume 125 cm3 are joined to form cubiod find surface area of cuboid

Answer 1

volume of cube=
${x}^{3}$
$125 = {x}^{3} \\ x = 5$
side of cube is 5cm

when we join three cube one to one in row we get a cuboid of dimension(x)×(x)×(3x)

$surface \: area \: of \: cuboid \: is \\ 2(lb + bh + hl) \\ 2(5 \times 15 + 5 \times 5 + 5 \times 15) \\ 2(75 + 25 + 75) \\ 2(175) \\ 350 {cm}^{2}$