If the radius of a circle is 21 cm, then find its circumference and area.
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Answered by
4
Step-by-step explanation:
C≈131.95cmhope it will help
Answered by
4
Answer:
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Step-by-step explanation:
Radius of a circle = 21 cm
Circumference of a circle = 2πr
= 2 × (22/7) × 21
= 44 × 3
Circumference of a circle = 132 cm
Area of a circle = πr²
= (22/7) × (21)²
= (22) × (3 × 21)
= 66 × 21
Area of a circle = 1386 cm²
Circumference of circle = 132 cm
Area of circle = 1386 cm²
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