Answer:
Step-by-step explanation:
area of circle=π[tex]r^{2}[/tex]
=22/7*[tex]21^{2}[/tex]
=22/7*441
=9702/7
=1386 [tex]cm^{2}[/tex]
1386cm sq
formula to find area of circle is 22/7*radius sq
which is 22/7 * 21 * 21
= 22 * 3 * 21
= 1386
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