Question

# External dimensions of a wooden cuboid are 30 cm, 25 cm and 20 cm. If the thickness of the wood is 2 cm all around, find the volume of the wood contained in the cuboid formed.

A

6236 cm3

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

6364 cm3

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

5264 cm3

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

6264 cm3

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

## The correct option is D 6264 cm3 External length of cuboid = 30 cm External breadth of cuboid = 25 cm External height of cuboid = 20 cm. ∴External volume of cuboid =(30×25×20)=15000 cm3 The thickness of the wood is 2 cm all around. So, length =(30 - 4) = 26 cm. Similarly, breadth = 21 cm and height = 16cm. The internal volume of the cuboid = (21×26×16)=8736 cm3 Volume of the wood = External volume - internal volume = (15000−8736)=6264 cm3

Suggest Corrections
1
Join BYJU'S Learning Program
Related Videos
Volume of Solids
MATHEMATICS
Watch in App
Explore more
Join BYJU'S Learning Program