Question 7
[tex]\sqrt{(12)(4)}=4\sqrt{3}[/tex]
Question 8
[tex]\sqrt{(13)(3)}=\sqrt{39}
[tex]\sqrt{(13)(3)}=\sqrt{39}[/tex]
Question 9
[tex]SR=30-6=24 \\ \\ QS=\sqrt{(24)(6)}=12[/tex]