Question

100 points: A small circular mirror has a 2 cm frame around it. The mirror itself is 8 cm in diameter.

if possible show your work :)
(a) Write and simplify an expression for the exact area of the frame.
(b) Find the approximate area of the frame. Use 3.14 to approximate π

Answer 1

Total diameter:-

• 8+2+2=8+4=12cm

Radius=12/2=6cm

So

Area:-

• πr²
• π6²
• 36πcm²

#2

• 36(3.14)
• 113.04cm²(Exact)

Answer 2

48π and 150.72

Explanation:

Please check out the attached photo. by the way, if anything's confusing, feel free to leave a comment. I'm here to help.