tolong apa jawaban no 1

v = 1/3 x L alas x T
616 = 1/3 x L alas x 12
L alas = 616 : 1/3 : 12
L alas = 1848 : 12
L alas = 154 cm

L alas = L lingkaran
L lingkaran = π x r x r
154 = 22/7 x r x r
r2 = 154 : 22/7
= 7 x 7
r2 = 49
r = 7