" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
keliling = 4s
4s = 48
s = 48 / 4
s = 12 cm
panjang garis pelukis = √8² + (1/2 . 12)²
= √64 + 6²
= √64 + 36
= √100
= 10 cm
luas permukaan prisma = luas alas + 4 * luas sisi
= (12 * 12) + 4 * (1/2 * 10 * 12)
= 144 + 4 * (60)
= 144 + 240
= 384 cm²
==========
luas persegi = 12 * 12
= 144 cm²
luas persegi panjang = 15 * 5
= 75 cm²
luas gabungan = 144 + 75
= 219 cm²
luas yang diarsir = 219 - 179
= 40 cm²
40 cm² seandainya kedua bangun ruang itu tidak bertumpuk.
Jika bertumpuk maka,
40 / 2
= 20 cm²