 # RD Sharma Solutions Class 8 Mathematics Solutions for Volume Surface Area Cuboid Cube Exercise 21.1 in Chapter 21 - Volume Surface Area Cuboid Cube

Question 3 Volume Surface Area Cuboid Cube Exercise 21.1

Find the height of a cuboid of volume 100 cm3, whose length and breadth are 5 cm and 4 cm respectively.

Given details are,

Volume of a cuboid = 100 cm3

Length of a cuboid = 5 cm

Breadth of a cuboid = 4 cm

Let height of cuboid be ‘h’ cm

We know that, l × b × h = 100cm

h = 100/( l × b)

= 100/(5×4)

= 5cm

Video transcript
"hello dear student i am here to help you with a very easy problem which goes like this we need to find the height of a cuboid of volume 100 centimeter cube whose length and breadth are 5 and 4 centimeters respectively so let's see what is the formula for volume of cuboid volume of cuboid [Music] is equal to the length into the breath into the height right so volume is given that is 100 right volume is given as 100 centimeter cube so 100 centimeter cube is equal to the length multiplied by the breadth multiplied by the height so what would the height be then in this case height would be 100 centimeter cubed divided by [Music] 5 centimeter into 4 centimeter right so let's cancel out these numbers five twos are ten and four fives are 20 and centimeter centimeter with with centimeter cube in the numerator leaves us with one with single centimeter unit all right so h is equal to 5 centimeters so this is our answer the height of the cube is equal to 5 centimeters i hope you understood the solution do subscribe to our channel and visit it regularly for more such homework solutions thank you"
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