Question

18ч36мин*2= 8м²4дм²= дм² 40га= м²

Answer 1

1) 37ч 12мин.
2)84 дм2
3) 40000 м2

Answer 2

Let's break down the calculations step by step:

1. 18 hours and 36 minutes * 2: To multiply hours and minutes, we need to convert everything to minutes first. 18 hours * 60 minutes/hour = 1080 minutes 36 minutes Now, we add both to get the total time in minutes: 1080 minutes + 36 minutes = 1116 minutes Finally, we multiply by 2: 1116 minutes * 2 = 2232 minutes

So, 18 hours and 36 minutes * 2 = 2232 minutes.

2. 8 square meters and 4 square decimeters (dm²): 1 square meter (m²) = 10000 square centimeters (cm²) 1 square decimeter (dm²) = 100 square centimeters (cm²)

First, let's convert 8 square meters to square centimeters: 8 m² * 10000 cm²/m² = 80000 cm²

Now, let's convert 4 square decimeters to square centimeters: 4 dm² * 100 cm²/dm² = 400 cm²

Now, let's add both values to get the total area in square centimeters: 80000 cm² + 400 cm² = 80400 cm²

So, 8 m² 4 dm² = 80400 cm².

3. Converting 40 hectares (ha) to square meters (m²): 1 hectare (ha) = 10000 square meters (m²)

40 ha * 10000 m²/ha = 400000 m²

So, 40 hectares = 400000 square meters.

In summary:

• 18 hours and 36 minutes * 2 = 2232 minutes.
• 8 square meters and 4 square decimeters = 80400 square centimeters.
• 40 hectares = 400000 square meters.