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What is the area of a circle if the radius of the circle is 20 ? 3.14 is the approximate for pi

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May 21, 2018

$A = π \cdot r^{2} = 3.14 \cdot {(20)}^{2} = 3.14 \cdot 400 = 1256$ $A=pi*r^2=3.14*(20)^2=3.14*400=1256$

Explanation:

the Area of the circle given by $A = π \cdot r^{2}$ $color(red)[A=pi*r^2]$

when the radius equal $r = 20$ $r=20$

$A = π \cdot r^{2} = 3.14 \cdot {(20)}^{2} = 3.14 \cdot 400 = 1256$ $A=pi*r^2=3.14*(20)^2=3.14*400=1256$

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