anonymous
  • anonymous
A solid candy jawbreaker is cut in half. If its diameter is 4 cm, what is the surface area of a half piece? please show me the steps.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Mertsj
  • Mertsj
\[SA=4\pi r^2\]
Mertsj
  • Mertsj
Plug 2 into that in place of r. When you get the answer, divide it by 2 since we're talking about half a jawbreaker.
anonymous
  • anonymous
it is 16 pi. you divide with 2 it becomes8 pi.is it right

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Mertsj
  • Mertsj
That's what I got.
anonymous
  • anonymous
but the answer is12 pi
Mertsj
  • Mertsj
We forgot to add the flat surface which is a circle with radius 2
anonymous
  • anonymous
please can you explain
Mertsj
  • Mertsj
The area of that circle is pi(2)^2 or 4 pi
Mertsj
  • Mertsj
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Mertsj
  • Mertsj
The 8 pi is the area of the shaded part. The flat part where it was cut in two is part of the surface too.
Mertsj
  • Mertsj
Do you understand?
anonymous
  • anonymous
what answer did you get it?

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