Question

find the perimeter of circle 21 cm
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Answer 1

Answer:

perimeter of circle is 2 (pie r)

r=21

2(22/7×21)

44/7×21

44

Answer 2

Answer:

$perimeter \: of \: circle = 2\pi \: r \\ radius \: of \: circle = 21cm \\ required \: formula = 2\pi \: r \\ \: \: \: \: \: \: \: = 2 \times \frac{22}{7} \times 21 \\ \: \: \: \: \: \: \: \: \: \: \: \: = 2 \times 22 \times 3 \\ \: \: \: \: \: \: = 132cm \\ hope \: it \: heps \: \\ plz \: mark \: as \: brainlist$