Question

how can square root of 20 square + 20 square be 20 root2​?

Answer 1

Answer:

√(20)^2+(20)^2= √2(20)^2=20√2

mark as brianlist answer

Answer 2

Answer:

it's easy

Step-by-step explanation:

Here,

$\sqrt{( {20}^{2} + {20}^{2} )}$

now we can take 20 square as common....

$\sqrt{(1 + 1) {20}^{2} }$

now....

$\sqrt{ {20}^{2} } \times \sqrt{2}$

so it's 20✓2