tolong dijawab nomor 28

Mapel : Matematika
Bab : Bangun Ruang

t alas = akar 15^2 - 12^2
t alas = akar 225 - 144
t alas = akar 81
t alas = 9 cm

L alas = 1/2 × a × t
L alas = 1/2 × 12 × 9
L alas = 6 × 9
L alas = 54 cm^2

V = L alas × t prisma
V = 54 × 15
V = 810 cm^3

(A)