Mathematics
OpenStudy (anonymous):

OpenStudy (anonymous):

$240=16\times 15$ is a hint

OpenStudy (anonymous):

$16*\sqrt{15}$

OpenStudy (anonymous):

is that it?

OpenStudy (anonymous):

$\sqrt{240}=4\sqrt{15}$

OpenStudy (anonymous):

safiah

OpenStudy (anonymous):

when you break it down and there is two groups of 2 do you just do 2(2)?

OpenStudy (asnaseer):

@satellite73 gave you a very big hint at ow to solve this. you need to make use of the rule $$\sqrt{a\times b}=\sqrt{a}\times\sqrt{b}$$. so, in your case, we have $$\sqrt{240}=\sqrt{16\times15}=\sqrt{16}\times\sqrt{15}=4\times\sqrt{15}=4\sqrt{15}$$