A small sailboat traveling at the rate of 21 km/h crossed a sea in 30 minutes.How far across is the sea?
well, it took 1/2 hour, so ...
To calculate the distance across the sea, you can use the formula:
Distance = Speed x Time
Given that the sailboat is traveling at a rate of 21 km/h, and it takes 30 minutes to cross the sea, you need to convert the time to hours.
1 hour = 60 minutes
Therefore, 30 minutes = 30/60 = 0.5 hours.
Now you can substitute the values into the formula:
Distance = 21 km/h x 0.5 hours
Calculating:
Distance = 10.5 km
So, the distance across the sea is 10.5 kilometers.