littqueen123 littqueen123
  • 10-06-2020
  • Mathematics
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How much glass is needed to make the given cup below, if it has a height of 6 inches and a radius of 1.5 inches

How much glass is needed to make the given cup below if it has a height of 6 inches and a radius of 15 inches class=

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osikbro
osikbro osikbro
  • 10-06-2020

Answer:

[tex]31.5\pi[/tex]

Step-by-step explanation:

Using the formula given, you can find that the surface area of the glass is:

[tex]2\pi r^2 h+ 2\pi r^2= \\\\2\cdot \pi \cdot 1.5^2 \cdot 6+2\cdot \pi \cdot 1.5^2=\\\\27\pi + 4.5\pi=\\\\31.5\pi[/tex]

Hope this helps!

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