Question

Help me please !!!!!!

rumus juga ya !!!!!!

Answer 1

Verified answer

MAPEL = MATEMATIKA
KELAS = 8
BAB = BANGUN RUANG

diketahui =
sisi sejajar = 28cm & 10cm
sisi kaki trapesium = 15cm
tinggi prisma = 20cm

ditanya = V.prisma trapesium??

- mencari tinggi prisma
t = √15² - ( (28 - 10)/2 )²
t = √15² - ( 9 )²
t = √225 - 81
t = √144
t = 12cm

V. prisma = ½( jumlah sisi sejajar ) × t × T.prisma
= ½ × ( 28cm + 10cm ) × 12cm × 20cm
= ½ × 38cm × 12cm × 20cm
= 19cm × 12cm × 20cm
= 4560cm³ ➡ B.

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