" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
=400 - 25 - 25
=350 cm
2. tidak tahu
L = 20² - 2(5²)
= 400 - 2(25)
= 400 - 50
= 350 cm²
K = Jumlah panjang seluruh sisi
= 4(20 - 5) + 4(5)
= 4(15) + 20
= 60 + 20
= 80 cm
Gambar 2 ~>
L = 3(4²) + 2(12 × 4)
= 3(16) + 2(48)
= 48 + 96
= 144 cm²
K = Jumlah panjang seluruh sisi
= 2(4 × 3) + 2(12) + 4(8)
= 2(12) + 24 + 32
= 24 + 24 + 32
= 80 cm