If the radius of a circle is 21 CM then the area of the circle is _____ sq cm.
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Answer:Area of a circle = 1386 cm²
Answer:Area of a circle = 1386 cm²Step-by-step explanation:
If radius of the circle is 21cm then find its area.
Area of a circle = \pi r²
\= 22/7 ( by constant )
r= radius of circle = 21 cm
area of circle = ( 22/ 7) × 21²
area of circle => 22× 21× 3
hence area of circle = 1386 cm²
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