Question

Tolong jawa nomor 16 sama 20. mksh

Answer 1

Ukuran balok 60cm×60cm×80cm

volume balok=p.l.t
60×60×80=
=288.000cm³
=288dm³
=288l

mengisi 3l/menit
288l×3=96 menit

1 jam 36 menit (b)

Answer 2

17. dk = sm= 10
a = 12
tinggi segitiga pada bidang datar
= \| sm^2 - 1/2 a^2
= \| 10^2 - (1/2 × 12)^2
= \| 100 - 6^2
= \| 100 - 36 = \| 64 = 8

dt = l = .....?
penyelesaian
LP = la + 4 segitiga
LP = a x a + 4 × 1/2 x a x t
LP = 12 × 12 + 2 × 12 × 8
LP = 144 + 192
LP = 336 cm^2