Answer:
Step-by-step explanation:
Consider curl
where
is a scalar function and F is a vector function

i j k



Answer:
Option C. 
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its corresponding sides is proportional
In this problem
Using proportion

Answer:
6m√5
Step-by-step explanation:
√(12m)·√(15m) = √(180m²) = √(5·(36m²)) = √5·√(6m)²
= 6m√5 . . . . . . for m ≥ 0