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RD Sharma Solutions Class 8 Mathematics Solutions for Volume Surface Area Cuboid Cube Exercise 21.1 in Chapter 21 - Volume Surface Area Cuboid Cube
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Find the height of a cuboid of volume 100 cm3, whose length and breadth are 5 cm and 4 cm respectively.
Answer:
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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