5. If the radius of a circle is 21 cm, then find its circumference and area.
Answers
Answered by
1
circumference =2*22/7*21
=131.947 cm
area=22/7*21*21
=1385.442 cm^2
Answered by
2
Answer:
176 cm.
Step-by-step explanation:
circumference of circle= 2πr
= 2x22/7x21
=2x22x3
=44x3
=176 cm.
Area of circle= πr²
=22/7x(21)²
=22/7x21x21
=22x3x21
=66x21
=1386 cm²
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