Find the volume of metal required to make a closed box of thickness 1 cm with external measurements 12 cm x 7 cm x 10 cm. 

 A water tank has a capacity to hold 5000 l of water. If the base of the tank has dimensions 5 m x 2 m find its height.

selina class 9 concise mathematics chapter 1 solutions ex 1c q6

 Selina Class 9 Concise Mathematics ICSE | Chapter 1 | Solutions Ex 1c Q6 | RATIONAL IRRATIONAL NUMBERS

 

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 electronic confiiguration first 20 elements class 9 worksheet notes pdf

 

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useful links

 isotopes:

https://www.britannica.com/science/isotope

 

atomic mass

https://www.angelo.edu/faculty/kboudrea/periodic/structure_mass.htm 

 

 

 

 

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circles selina concise mathematics solutions class 10 icse chapter 18 tangents and intersecting chords

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 circles selina concise mathematics solutions class 10 icse chapter 18 tangents and intersecting chords