" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
= 2×21cm^2 + 2×15cm^2 + 2×35cm^2
=42cm^2 + 30cm^2 + 70cm^2
=142cm^2
2. C : R = 5 : 4
suhu hari ini (C) = 18°C-3°C -> =15°C
Suhu (R) = 4/5 × 15° -> = 12°R
3. 5/2m × 3/4m
= 15/8m atau 1 7/8m
4. 15dm × 7,5dm × 2dm
= 225dm
Luas sisi = 2(pl+pt+lt)
= 2(7x3+7x5+3x5)
=2(21+35+15)
= 2(71)
= 142 cm²
2). suhu jkt = 18-3
= 15°c
= 15 x 0,8
= 12°R
3). Luas = panjang x lebar
= 2½ x ¾
= 5/2 x 3/4
= 15/8
= 1,875 m²
4). panjang = 150cm = 15 dm
lebar = 75 cm = 7,5 dm
tinggi = 20 cm = 2 dm
Isi balok = panjang x lebar x tinggi
= 15 x 7,5 x 2
= 225 dm³