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Luas lingkaran =
Luas 1/4 lingkaran =
1/4
=1/4 x 3,14 x 15 x 15
=1/4 x 3,14 x 225
=1/4 x 706,5
=176,625
= 1/4 x 22/7 x 225
= 22/28 x 225
= 11/14 x 225
= 2475/14
=176 ¹¹/₁₄ cm²