Let's break down and solve the problems shown in the image one by one.

1. $0.02 \, \text{jam} + 20 \, \text{menit} \, = \, \dots \text{detik}$

   Convert everything to seconds:

   • $0.02 \, \text{jam} = 0.02 \times 3600 = 72 \, \text{detik}$
   • $20 \, \text{menit} = 20 \times 60 = 1200 \, \text{detik}$
   • Total: $72 + 1200 = 1272 \, \text{detik}$

   Answer: $1272 \, \text{detik}$

2. **( \frac{1}{2} , \text{menit} + 10 , \text