Question

If the thickness of a pile of 12 cardboards is 65 mm, find the thickness of a pile of 312 such cardboards?


Answer is 1m 69 cm please agar koyi solution janta ha yoh batao​

Answer 1

Answer:

1m69cm

Step-by-step explanation:

65mm=12 cardboards

?? = 312 cardboards

after cross-multiplication

312×65÷12=1690cm=1m 69 cm

Answer 2

Given -

• Thickness of a pile of 12 card boards = 65 mm

To find -

• Thickness of a pile 312 card boards.

Solution -

How to solve?

❒ Firstly, find the thickness of 1 cardboard.

❒ Now, multiply the thickness of 1 cardboard by 312.

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⇛ Thickness of 12 card boards = 65 mm

⇛ Thickness of 1 card board = $\bf{\dfrac{65}{12}}$

⇛ Thickness of 312 card boards = $\bf{312 \times \dfrac{65}{12}}$

= 1690 mm or 169 cm

_______________________________

As we know,

• 1 mm = 0.1 centimeters

Divide the given value by 10 to convert it in cm.

= 1690/10 = 169 cm