Answer:
[tex]99\sqrt{15} \thickapprox \:383.42535[/tex]
Step-by-step explanation:
[tex]11\sqrt{1215}[/tex]
Factor [tex]1215[/tex] [tex]=9^{2} \times 15[/tex]. Rewrite the square root of the product [tex]\sqrt{9^{2} } \sqrt{15}[/tex], than take the square root of [tex]9^{2}[/tex].
[tex]11\times 9\sqrt{15}[/tex]
Multiply 11 and 9 which will give you 99.
[tex]99\sqrt{15}[/tex]
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