1.In a radical expression, √m, how do you call m? 
a. Radicand
b. index
c. root
d. Exponent
2. The principal square root of √0.04 is _______?
a. 0.02
b. 0.2
c. 0.4
d. 2
3.Which of the following is equal to the square ( 0.7 )
a. 0.49
b. 0.049
c. 4.9
d. 0.14​