Question

What will be the maximum length of a pencil that can be kept in a rectangular box of dimensions 12cm×9cm×8cm

Answer 1

diagonal of cuboid=whole UNDERROOT L^2+B^2+H^2
12^2 9^2+8^2
UNDERROOT 144+81+64
UNDERROOT 289
ANSWER-17CM
hence maximum length of pencil can be kept in a rectangular box is 17 cm

Answer 2

hope you understand it dude......