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a
2.1 cm
2.9 cm
Find the value of a.


A 21 Cm 29 Cm Find The Value Of A class=

Sagot :

Step-by-step explanation:

[tex]a = \sqrt{ {2.9}^{2} - {2.1}^{2} } = \\ = \sqrt{8.41 -4.41 } = \\ \sqrt{4 } = 2[/tex]