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Inessa05 [86]
3 years ago
13

The area of a circle is 826 centimeters. Find the diameter.

Mathematics
1 answer:
WITCHER [35]3 years ago
4 0
The formula for area of a circle  = PI x r^2

since we know area, we can put that in the formula and solve for r ( which is the radius) diameter is radius x 2

826 = 3.14 x r^2

divide both sides by 3.14:

r^2 = 826 / 3.14

r^2 = 263.06

r = square root (263.06)
r = 16.22 cm

diameter = 16.22 * 2 = 32.44 cm
 

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