Please help me with this ASAP ASAP please please help

9514 1404 393

  h = 7 in

  LA = 42π in²

  SA = 60π in²

Step-by-step explanation:

Use the appropriate formula with the numbers you know, and solve for the number you need to know.

  V = πr²h

  h = V/(πr²) = (63π in³)/(π(3 in)²)

  h = 7 in

__

  LA = 2πrh

  LA = 2π(3 in)(7 in)

  LA = 42π in²

__

  SA = 2πr(r +h)

  SA = 2π(3 in)(3 in +7 in)

  SA = 60π in²

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation:

70

step-by-step explanation: