Question

A closed wooden box with external dimension 80cm×60cm×40cm is made of 2cm thick wood.If 1cm™3 would weight 10gms.Find the weight of the empty box

Answer 1

387840 gms = 387.84 kgs

Answer 2

The weight of the empty box is 387840 grams

Step-by-step explanation:

External length = 80 cm

External breadth = 60 cm

External height = 40 cm

Thickness of wood = 2 cm

Internal Length = 80-(2+2)=76 cm

Internal breadth = 60-(2+2)=56 cm

Internal height = 40-(2+2)=36 cm

Volume of wood = External volume - Internal volume

Volume of wood =$(80 \times 60 \times 40)-(76 \times 56 \times 36)$

Volume of wood = 38784  cubic cm

1 cubic cm = 10 grams

38784 cubic cm = 387840 grams

Hence the weight of the empty box is 387840 grams

#Learn more:

A closed wooden box 80cm,long 65cm wide and 45cm high is made of 2.5cm thick wooden .find the capicity of box and its weight if100cmcube of wooden weight 8gram

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