Question

Find the height of the cylinder?

Answer 1

need help :(
steps?

Answer 2

what is the radius of the cylinder..?

Answer 3

find the radius of the cylinder is the 1st step to finding the height of the cylinder

Answer 4

@campbell_st yeah it's 7

soo 461.8= 2(49pi) + hpi ???

Answer 5

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

Answer 6

@campbell_st got 3.4! thanks for the steps
i'll look at this next time i need help on it again!

Answer 7

Round[ 3.49968, 0.1] = 3.5