Answer:
4.243
Step-by-step explanation:
To calculate the diagonal of a square, multiply the length of the side by the square root of 2:
d = a√2
d = 3√2=4.24264068
One litre because 1 litre=1000ml
so i litre is better
Answer:

Step-by-step explanation:
Given the expression
, we will use laws of indices to get the equivalent expression as shown below;
According to one of the law of indices,


This gives the required expression
14(10) + 2, 14x10 is 140 plus 2 = 142
2(7(10) + 1) 7x10 = 70 + 1 = 2(71) = 142
No they arent proportional