Tentukan keliling dan luas daerah yg diaarsir ....
#lingkaran
maazih
5dregensleyer
Luas = 1/4 x phi x r x r = 1/4 x 3,14 x 10 x 10 = 3,14 x 5 x 5 = 78,5 kliling = 10 + 10 + (1/4 x 2 x phi x r ) = 20 + ( 1/2 x 3,14 x 10) = 20 + ( 3,14 x 5) = 20 + 15,7 = 35,7 cm
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annisarani01
cara keliling nya apa ??? kasic tau donk please ..
5dregensleyer
sudah .. .. jika membantu boleh di tandai jawabn terbaik dek
= 1/4 x 3,14 x 10 x 10
= 3,14 x 5 x 5
= 78,5
kliling = 10 + 10 + (1/4 x 2 x phi x r )
= 20 + ( 1/2 x 3,14 x 10)
= 20 + ( 3,14 x 5)
= 20 + 15,7
= 35,7 cm