Jawabanmu

2014-05-04T12:53:27+07:00
Luas selimut = phi x r x s
= 3,14 x 5 x 13 (dri phytagoras)
= 204,1
2014-05-04T12:56:15+07:00
Luas selimut kerucut = phi × r × s
s (garis pelukis ) = √12² + 5² = 13
phi × r × s -> 3,14 × 5 × 13 = 204,1