nuccioreggie
  • nuccioreggie
The image below is a triangle drawn inside a circle with center O: A triangle is shown inscribed inside a circle. The leg of the triangle labeled 8 inches passes through the center of the circle, O. The other two legs are labeled as 4 inches and 5 inches. Which of the following expressions shows the area, in square inches, of the circle? (π = 3.14) 3.14 ⋅ 42 3.14 ⋅ 52 3.14 ⋅ 5 3.14 ⋅ 22
Mathematics
chestercat
  • chestercat
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nuccioreggie
  • nuccioreggie
nuccioreggie
  • nuccioreggie
is A correct?
Michele_Laino
  • Michele_Laino
I'm thinking...

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nuccioreggie
  • nuccioreggie
u think it A?
Michele_Laino
  • Michele_Laino
is your drawing like this? |dw:1439566709975:dw|
Michele_Laino
  • Michele_Laino
nuccioreggie
  • nuccioreggie
NO I WILL SHOW U
Michele_Laino
  • Michele_Laino
ok!
nuccioreggie
  • nuccioreggie
1 Attachment
nuccioreggie
  • nuccioreggie
THERE
Michele_Laino
  • Michele_Laino
yes! I asked for that drawing, because my drawing it is impossible, since a traingle inscribed like mine has to be a right triangle
Michele_Laino
  • Michele_Laino
triangle*
nuccioreggie
  • nuccioreggie
so A
Michele_Laino
  • Michele_Laino
here we can compute the area of our triangle, using the Eron's formula
nuccioreggie
  • nuccioreggie
is A correct ?
Michele_Laino
  • Michele_Laino
the half-perimeter of our triangle is: p=(8+4+5)/2=...?
nuccioreggie
  • nuccioreggie
why u neveranswer my question is it A?!
nuccioreggie
  • nuccioreggie
14.5
Michele_Laino
  • Michele_Laino
please wait a moment I check your answer
nuccioreggie
  • nuccioreggie
OK
nuccioreggie
  • nuccioreggie
DID YOU GET IT
Michele_Laino
  • Michele_Laino
sorry, the area of a circle is: pi*radius^2=3.14*4*4=...? since the diameter is 8 inches, then radius= 4 inches
nuccioreggie
  • nuccioreggie
3.14 .42
Michele_Laino
  • Michele_Laino
it is: \[3.14 \cdot {4^2}\]
Michele_Laino
  • Michele_Laino
it is 4^2 not 42
nuccioreggie
  • nuccioreggie
OK
Michele_Laino
  • Michele_Laino
ok!

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