Answer:GCF is the Greatest Common Factor. So what you have to do is find the greastest factor 12 and 21 has in common.
Step-by-step explanation: go to learnzillion.com
Do you mean a cube has a surface area?
If so we identify by how many faces a cube has which is 6. That would mean to find the surface area we add each squares area to get 24. So we divide 24 and 6 to get the area of each face.
24 / 6 = 4 m^2
We know that a square has equal side lengths thus finding that A = a^2. We find the square root of 4 to get the length of each square.
sqrt 4 = 2 m
Answer:
Angle BCA = 70
Angle CAB = 20
Step-by-step explanation:
Not sure what angle you meant, so I'll give you all of them <3
Angle BCA = 70 degrees, because If two angles form a line, they add up to 180. (110+x=180, x = 70)
Angle CAB = 20 degrees, because there are 180 degrees in a triangle, so 90+70+x=180, x = 20
Hope it helps <3
B 64/7 I did the math it is b
