I'll mark brainliest A spherical balloon of radius 3 metres has a volume of 36π cubic metres. It is further inflated until its radius is 12 m.
Calculate its new volume, leaving your answer in terms of π.

The distance between the ships changing at 5 PM is 21.355 knots

Step-by-step explanation:

let x = distance traveled by ship A

y = distance traveled by ship B

Let z be the distance between Ship A and Ship B

Ship A is sailing west at 16 knots and ship B is sailing north at 15 knots.

Refer the attached figure

x=50+16t

y = 15t

At 5 Pm

x=50+16(5)=130

y = 15(5)=75

We will use Pythagoras theorem

At 7 pm

Differentiating both sides

Hence The distance between the ships changing at 5 PM is 21.355 knots