If radius of a circle is 21 cm then find its area.
Answers
Answered by
119
hey!!!
given the radius of the circle = 21cm
hence, it's area = πr²
= 22/7 × 21 × 21
= 22 × 3 × 21
= 1386cm²
cheers!!!
given the radius of the circle = 21cm
hence, it's area = πr²
= 22/7 × 21 × 21
= 22 × 3 × 21
= 1386cm²
cheers!!!
Answered by
45
Answer:
Area of circle = 1386 cm²
Step-by-step explanation:
If radius of a circle is 21 cm then find its area.
Area of a circle = π R²
π = 22/7 ( a constant)
R = Radius of circle = 21 cm
Area of circle = (22/7) * 21²
=> Area of circle = 22 * 21 * 3
=> Area of circle = 1386
Area of circle = 1386 cm²
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