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Sagot :
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[tex]\textsc{heya!}[/tex]
we need to find the area of a circle with a radius of 21.
we also need a formula for this, which is
⇒ [tex]\bold{A=\pi r^2}[/tex]
the known value is r, radius, 21.
after substituting the value into the formula, we obtain:
⇒ [tex]\bold{A=\pi (21)^2}[/tex]
now we multiply the radius times itself:
⇒[tex]\bold{A=\pi *441}[/tex]
which can be written as
⇒[tex]\bold{A=441\pi}[/tex]
and finally, multiply the values
⇒ [tex]\bold{A=1385.4\;units\;^2}[/tex]
[tex]\textsc{hopefully\:helpful}[/tex]
by: [tex]\textsc{$^da_nc^in_g$}[/tex]
have a great rest of your day ahead ~ = )
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