Answer:
This is a theory.
Step-by-step explanation:
The sialic continents, mafic ocean floors, the crust, the mantle and the core were all formed while the early melted Earth cooled and differentiated as low density minerals floated to the surface and heavy, denser minerals sank to the center.
This is a theory.
Answer:
I'm not pretty sure but I think is the second option, B
Answer:
the answer is the third one
Answer:
length of an arc =1 /3 unit or 0.3unit
Step-by-step explanation:
to calculate the length of an arc, having it in mind that the arc is a portion of the circumference of a circle.
circumference of a circle = 6unit
Ф = 20°
recall,
the formulae for finding the length of an arc
= 2πr(Ф/360)
assuming that r is the radius of the circle
so, the circumference of a circle is given to be = 2πr
6 = 2πr
r = (6/2π)
length of an arc = 2πr(Ф/360)
remember that r = (6/2π)
length of an arc = 2π(6/2π) [20°/360°]
length of an arc = 6 × 20°/360°
length of an arc = 120°/360°
length of an arc = 1/3unit
i looks like it would be v