The surface area of a sphere is:
A=4πr^2, if r=12 and π is approximated as 3.14 then
A≈4(3.14)(12^2)
A≈4(3.14)(144)
A≈576(3.14)
A≈1808.64 cm^2
Answer:

Step-by-step explanation:

Question 11 :
the equations are :
now, let's graph the lines ~
As you can see in the attachment, The lines coincides each other, so the equations are :
Answer:
(12)(3)(-2)
Step-by-step explanation:
Answer:
40
Step-by-step explanation: