Question

the external dimension of an open iron box at 20 cm and 15 cm and 12 cm is the thickness of iron is one centimetre find the volume of the iron used




PLZ NO WRONG ANSWER LIKE I DON'T KNOW HE OR SHE WILL BE REPORTED​

Answer 1

Step-by-step explanation:

Volume of material used =>

Outer Volume - inner volume is

Outer Volume Vo = 20×15×12 =>3600 cm²

Inner volume Vi = (20-2) × (15-2) × (12-10)

=> 18×13×10 => 180×13 => 2340 cm²

therefore V(material) = 3600 - 2340

=> 1260 cm²