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If the diameter of a circle is 8 cm, what is the area of the circle?







If the diameter of a circle is 8 cm, what is the area of the circle?

Sagot :

Area of circle=pi*radius^2=50.29 cm^2
naǫ
The diameter is twice the radius.
If the diameter is 8 cm, then the radius is 4 cm.

[tex]A=\pi r^2[/tex]
A - area, r - radius

[tex]r=4 \ [cm] \\ \\ A=\pi \times 4^2=16 \pi \approx 50.27 \ [cm^2][/tex]

The area is 16π cm², or approximately 50.27 cm².
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