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Estimate the length of the radius, if the area of a circle is 75 mm2.
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area is pir^2 so \[pir^2=75\] \[r^2=75/\pi\] \[r^2=23.87\] \[r=4.88mm\]
pi r^2=75mm^@ r^2=75/3.142 r^2=23.87 r=under root 23.87 r=4.88 mm
@sami-21 : how do you write in this style can u please tell me...:)
@Qibtiya use the equation at the bottom of answer box
@sami-21 i do but it does not turn out correct
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just matter of time you will get use to to it .
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