Question

Media Geometrica
25 si 16
8 si 16
100 si 3

​

Answer 1

$a) \: \sqrt{25 \times 16} = \sqrt{5 {}^{2} \times 4 {}^{2} } = 5 \times 4 = 20 \\ b) \: \sqrt{8 \times 16} = \sqrt{ {2}^{2} \times 2 \times 4 {}^{2} } = 2 \times 4 \sqrt{2} \\ = 8 \sqrt{2 } \\ c) \: \sqrt{100 \times 3} = \sqrt{10 {}^{2} \times 3 } = 10 \sqrt{3}$