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Brut [27]
3 years ago
14

Help me please it is math

Mathematics
1 answer:
777dan777 [17]3 years ago
6 0
The formula for volume of a cylinder is : V = PI x r^2 x H

for both questions, plug in the known information and solve for the unknown:

Q1)  V = 450, H = 8
  so 450 = 3.14 x r^2 x 8
        450 = r^2 x 25.12
 r^2 = 450 / 25.12 = 17.914
r = sqrt(17.914) = 4.23  rounded to nearest tenth = 4.2 inches

Q2) V = 500, r=6
  
 500 = 3.14 x 6^2 x H
500 = 3.14 x 36 x h
500 = 113.04 x h

h = 500 / 113.047 = 4.42 = 4.4 inches

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