shoutcheyennexx5469 shoutcheyennexx5469
  • 15-04-2020
  • Mathematics
contestada

A roll of paper towels is 11 inches high and 6 inches in diameter. If a 300- square inch sheet of plastic is provided to wrap the paper towels, how much extra plastic is there ?

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 15-04-2020

Answer:

  36.1 in²

Step-by-step explanation:

The total surface area of a cylinder of height h and radius r is given by ...

  SA = 2πr² + 2πrh = 2πr(r+h)

For a cylinder of height 11 inches and radius 3 inches, the surface area is ...

  SA = 2π(3 in)(3 in +11 in) = 84π in² ≈ 263.9 in²

Then the "extra" wrap area is ...

  300 in² -263.9 in² = 36.1 in²

Answer Link

Otras preguntas

PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG
Write 5 times x to the two thirds power in radical form
What is the mean of the data set 14, 12, 23, 15?
Find 18.5% of 500- I couldn’t seem to figure this one out for some reason I dunno
Which of the following are properties of glass? (2) * soft flexible hard brittle
Find the value of the power. 7^4 = Answer:
Which sentence correctly punctuates dialogue? “People can be sunburned even in the winter” Mr. Thomas said. “People can be sunburned even in the winter” Mr. Tho
What is a ratio that compares a quantity to 100
how did British imperialism impact the economy of India
If -2y = x and 3x + 2y = -4, then what is xy?