Tolong jawab ya

<p>diketahui :&nbsp;</p><p>r= 45cm : 3 = 15cm</p><p>ditanya : keliling bangun!</p><p>keliling lingkaran = phi x d = 3,14 x 30cm = 94,2cm</p><p>keliling total = keliling lingkaran + 2 x r = 94,2cm+15x2= 94,2cm+30cm= 124,2 cm</p><p>&nbsp;</p>