Question

the radius of the circle is 21 cm,find
a) circumference of the circle
b) area of the circle (pi=22/7)​

Answer 1

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Answer 2

Answer:

radius= 21cm

a) circumference = 2πr = 2×22/7 ×21 = 132cm

b) area = πr² = 22/7 × 21 ×21 = 1386 cm²