briana.img
  • briana.img
Find the height of the cylinder?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
briana.img
  • briana.img
briana.img
  • briana.img
need help :( steps?
campbell_st
  • campbell_st
what is the radius of the cylinder..?

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campbell_st
  • campbell_st
find the radius of the cylinder is the 1st step to finding the height of the cylinder
briana.img
  • briana.img
@campbell_st yeah it's 7 soo 461.8= 2(49pi) + hpi ???
campbell_st
  • campbell_st
well the surface area formula is \[SA = 2\pi r^2 + 2 \pi r h\] with r = 7 \[461.8 = 2\times \pi \times 7^2 + 2 \times \pi \times 7 \times h\] subtracting the area of the circles from both sides \[461.8 - 98\pi = 14\pi h\] divide both sides by 14 pi \[h = \frac{461.8 - 98\pi}{14\pi}\] now you can calculate the value of h
briana.img
  • briana.img
@campbell_st got 3.4! thanks for the steps i'll look at this next time i need help on it again!
anonymous
  • anonymous
Round[ 3.49968, 0.1] = 3.5

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