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22-01-2015
Mathematics

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The circle above has a radius of 7 cm. What is the area of the circle?

Use = 3.14.
43.96 cm2
153.86 cm2
21.98 cm2
307.72 cm2

Respuesta :

22-01-2015

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

[tex]r=7 \ [cm] \\ \pi \approx 3.14 \\ \\ A=3.14 \times 7^2=3.14 \times 49=153.86 \ [cm^2][/tex]

The area is 153.86 cm².

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