Prisma dengan alas lingkaran jari-jari (r) lingkaran =7 cm tinggi prisma = 10 cm. Π=22/7 a). berapa volume? b). berapa luas?
5dregensleyer
Volum = luas alas x t = 22/7 x 7 x7 x 10 = 22 x 7 x 10 = 1540 cm³ Lp = 2(La) + kliling alas x t = 2 ( phi x r² ) + 2 x phi x r x t = 2 ( 22/7 x 7 x7 ) + 2 x 22/7 x 7 x 10 = 2 ( 22 x 7 ) + 2 x 22 x 10 = 2 ( 154 ) + 440 = 308 + 440 = 748 cm²
= 22/7 x 7 x7 x 10
= 22 x 7 x 10
= 1540 cm³
Lp = 2(La) + kliling alas x t
= 2 ( phi x r² ) + 2 x phi x r x t
= 2 ( 22/7 x 7 x7 ) + 2 x 22/7 x 7 x 10
= 2 ( 22 x 7 ) + 2 x 22 x 10
= 2 ( 154 ) + 440
= 308 + 440
= 748 cm²