Question

Composite Mathematics-V
28
A wooden box (including the lid) has external dimensions of 40 cm by 34 cm by 30 cm. If the wood
1 cm thick, how many cm of wood are there in it ?​

Answer 1

Answer:

sorry I didn't know about the answer is

Answer 2

Answer:

Volume of cuboid = length × breadth × height

Volume of cuboid = 40 cm × 34 cm × 30 cm

Volume of cuboid = 40800 cm³

Inner dimensions,

Length = 40 - ( 1 + 1 ) cm = 38 cm

Breadth = 34 - ( 1 + 1 ) cm = 32 cm

Height = 30 - ( 1 + 1 ) cm = 28 cm

Volume of cuboid = 38 cm × 32 cm × 28 cm

Volume of cuboid = 34048 cm³

Remaining volume = 40800 - 34048 cm³

$\bold{\huge{=\underline{\:6752\:cm^3}}}$