What is the area of the compact disc?
A. 36 square centimeters
B. 18.84 square centimeters
C. 452.16 square centimeters
D. 113.04 square centimeters
I'm trying to learn this Algebra, so please try your best to explain to me how you get your answer, so I can use it to aid myself in doing this on my own. I really do appreciate anyones assistance. =)
2007-10-10 16:55:54 · 3 answers · asked by firefly_eyes75 3 in Education & Reference ➔ Homework Help
Center to edge is radius. Edge to edge across the center would be diameter. Area = Pi times the square of radius, so 6 squared is 36 and Pi is 3.14159 . . . and multiply them you get a little over 36 x 3 = 108 so D is the correct answer.
2007-10-10 17:05:30 · answer #1 · answered by Howard H 7 · 0⤊ 0⤋
113.04 because you would have A=pi(r squared) so a= 3.14 x 6 x6. answer D
2007-10-11 00:03:14 · answer #2 · answered by big_g06354 2 · 0⤊ 0⤋
The formula to calculate the area of a circle (like a CD) is pi x r^2
A meme to help you remember it:
"Pi are squared."
"No, pi are round..."
2007-10-11 00:04:24 · answer #3 · answered by Nandina (Bunny Slipper Goddess) 7 · 0⤊ 0⤋