tolong bantu cari volume dan luas permukaan.

L= phi r(r+s)
= 22/7 x 7( 7+12)
=22x 19
=418cm^2

V= 1/3 phi r^2 x t
= 1/3. 22/7. 49. 15
1/3. 22.7.15
=22.7.5
=770 cm^3