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# The External Dimensions of a Closed Wooden Box Are 48 Cm, 36 Cm, 30 Cm. the Box is Made of 1.5 Cm Thick Wood. - CBSE Class 9 - Mathematics

ConceptVolume of a Cuboid

#### Question

The external dimensions of a closed wooden box are 48 cm, 36 cm, 30 cm. The box is made of 1.5 cm thick wood. How many bricks of size 6 cm x 3 cm x 0.75 cm can be put in this box?

#### Solution

Given internal dimensions are

l=48-2xx"thickness"=48-3=45cm

b=36-3=33cm

h=30-3=27cm

∴ Internal volume =45xx33xx27cm^3

Volume of brick = 5xx3xx0.75cm^3

Hence, number of bricks= "Internal volume"/"volume of 1 brick"

=(45xx33xx27)/(6xx3xx0.37)

=(38880)/13.5

=2970

∴2970  "bricks can be kept inside the box"

Is there an error in this question or solution?

#### APPEARS IN

RD Sharma Solution for Mathematics for Class 9 by R D Sharma (2018-19 Session) (2018 to Current)
Chapter 18: Surface Areas and Volume of a Cuboid and Cube
Ex.18.20 | Q: 12 | Page no. 30
Solution The External Dimensions of a Closed Wooden Box Are 48 Cm, 36 Cm, 30 Cm. the Box is Made of 1.5 Cm Thick Wood. Concept: Volume of a Cuboid.
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