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Verified answer
K 1/2 lingkaran = 1/2 x πd=1/2 x 3,14 x 40
=20 x 3,14
= 62,8 cm
K bangun =62,8 +10+15+15+50
=152,8 cm
jawab.B
Verified answer
K 1/2 lingkaran = 1/2 × 2 π rπ r
3,14 × 20 = 62,8 cm
K persegi panjang = 2( p + l )
2( 15 + 50 )
2 ( 65 ) = 130 cm
K gabungan
62,8 cm + 130 cm = 192,8 cm