Question

Tolong bantu no.5-6
kalo salah di hapus

Answer 1

5) 2.744 di akarkuadrat kan = 14 cm
Lp = 2 x ( ( 28 x 14) + (28x 14)+(14x14)) =2x(392+392+196)
=2x980=1.960 cm2 (A)

Answer 2

5. V kubus = r³
r = ³√2.744 = 14 cm

p = 14+14 = 28 cm
l = 14 cm
t = 14 cm

Lp balok = 2×(p×l+p×t+l×t)
= 2×(28×14+28×14+14×14)
= 2×(392+392+196)
= 2×980
= 1.960 cm² (a)


6. Lp balok =2×(p×l+p×t+l×t)
=2×(50×50+50×300+50×300)
= 2×(2.500+15.000+15.000)
= 2×32.500
= 65.000 cm² = 6,5 m²
jadi, paling sedikit cat diperlukan = 7 kaleng








maaf kalo salah