All categories

3 years ago

How do you do this question?

Mathematics

1 answer:

ankoles [38]3 years ago

3 0

Step-by-step explanation:

S = ∫ 2π y ds

ds = √(1 + (dx/dy)²) dy

ds = √(1 + (8y)²) dy

ds = √(1 + 64y²) dy

S = ∫₁² 2π y √(1 + 64y²) dy

S = π/64 ∫₁² 128y √(1 + 64y²) dy

S = π/64 [⅔ (1 + 64y²)^(³/₂)] |₁²

S = π/96 (1 + 64y²)^(³/₂) |₁²

S = π/96 (1 + 256)^(³/₂) − π/96 (1 + 64)^(³/₂)

S = π/96 (257√257) − π/96 (65√65)

S = π/96 (257√257 − 65√65)

You might be interested in

Simplify. Write answers with positive exponents only.

Margaret [11]

Answer:

Step-by-step explanation:

when the base is the same, we subtract when dividing, so

3-2=1, 2x^1=2x

3 0

3 years ago

What is the solution

antoniya [11.8K]

Answer:

3,2 or 1

Step-by-step explanation:

5 0

3 years ago

Had to repost it for a better look if still cant see it txt me at 3343729907

kompoz [17]

Answer:

still cant see it sjwjejie

4 0

3 years ago

In a study to support drug discovery for patients with lung cancer, patients were divided into 3 groups based on the severity of

katrin [286]

Answer:

It is an example of an observational study.

Step-by-step explanation:

4 0

4 years ago

Determine the value of x in the diagram.<br> x<br> 2x<br> 2x

ryzh [129]

Answer:

x = 60

Step-by-step explanation:

The sum of exterior angles in a rectangle is equal to 360

so to find the value of x we need to use all given values and write an equation:

x + 2x + x + 2x = 360 add like terms

6x = 360 divide both sides by 6

x = 60

5 0

2 years ago