A scientist uses a submarine to study ocean life. • She begins at sea level, which is at an elevation of o feet
• She travels straight down for 90 seconds at a speed of
3.5 feet per second
• She then travels directly up for 30 seconds at a speed of
2.2 feet per second
After this 120 second period, how much time, in seconds, will it take for the scientist to
travel back to sea level at the submarine's maximum speed of 48 feet per second?
Round your answer to the nearest tenth of a second.
Show your work

5.2 seconds

Step-by-step explanation:

Traveling straight down: 90 * 3.5 = 315 feet down

Traveling up: 30 * 2.2= 66

315-66= 249

249/48= 5.1875 seconds

5.2 seconds <- rounded

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation: