What is the length, in units, of the hypotenuse of a right triangle if each of the two legs is 2 units?

a. 4 units
b. 2 units
c. square root of 6 units
d. square root of 8 units

Can someone plz me understand how to do these. plz, show work.in exercises 1-4, rewrite the expression in rational exponent form.[tex]\sqrt[4]{625} \sqrt[3]{512} (\sqrt[5]{4} )³ (\sqrt[4]{15} )^{7}\\ (\sqrt[3]{27} )^{2}[/tex]