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Find the perimeter of the quadrant whose radius is 21cm​

1 Answer

2 votes

Answer:

75 cm

Explanation:

∅=90° , r = 21 cm

Arc length= (2πr∅)/360

=(2π×21×90)/360

=33 cm

Perimeter= arc length + 2(radius)

=33+2(21)

=33 + 42

= 75 cm

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