A cube-shaped piece of copper has sides of 4cm each and it's density is 2.7 g. cm^3. What is the VOLUME of the piece of copper? A. 12 cm^3
B. 12 cm^3
C. 8 cm^3
D. 6.7 cm^3

can you hlep me do homework?

step-by-step explanation:

eve and marks ratios are equivalent

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.