Question

A submarine goes 50 meters below sea level every minute. so after half an hour, how many km of water would that submarine have gone?
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Answer 1

Answer:

vertical distance between plane and submarine

= 5000m - (-1200) m

= 6200 m Ans

Step-by-step explanation:

i hope you help from this answer

Answer 2

Answer:

1.5 km of water would that submarine have gone.

Step-by-step explanation:

Given, a submarine goes 50 meters below sea level every minute.

So we can say movement of submarine is 50 meters in 1 minute.

Now we want to find How many km of water would that submarine have gone after half an hour?

We know

$1 \: km = 1000 \: m$

By Unitary method,

$1 \: m = \frac{1}{1000} \: km$

$50 \: m = 50 \times \frac{1}{1000} \: km \\ = \frac{1}{20} \: km$

Now we have to find movement of the submarine in half an hour.

half an hour $= 30 \: minutes$

Here in 1 minute , movement of the submarine is $\frac{1}{20} \: km$

By Unitary method,

in 30 minutes, movement of the submarine is

$30 \times \frac{1}{20} \:km \\ = \frac{3}{2} \: km\\ = 1.5 \: km$

Here we used Unitary method.

Know more about Unitary method:

1) https://brainly.in/question/861311

2) https://brainly.in/question/861580