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Todra investigates the measures of a cylinder in math class. she knows that the volume of the cylinder is 1131.0 cubic centimeters. todra determines that the length of the cylinder is 40 centimeters. What is the radius of the cylinder?
a. 1 centimeter
b. 2 centimeters
c. 3 centimeters
d. 4 centimeters
 3 years ago
 3 years ago
Todra investigates the measures of a cylinder in math class. she knows that the volume of the cylinder is 1131.0 cubic centimeters. todra determines that the length of the cylinder is 40 centimeters. What is the radius of the cylinder? a. 1 centimeter b. 2 centimeters c. 3 centimeters d. 4 centimeters
 3 years ago
 3 years ago

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sstaricaBest ResponseYou've already chosen the best response.0
alright, you have the given which is the following:  V = 1131.0 cm^3  L = H = 40 cm and we know that the general formula of the volume of the cylinder is : \[V= \pi r^2 h\] you have V and you have H, substitute and find R ^_^
 3 years ago

lokisanBest ResponseYou've already chosen the best response.0
The volume of a cylinder is \[V=\frac{1}{3}(area_.base)(height)\]
 3 years ago

sstaricaBest ResponseYou've already chosen the best response.0
are you sure? because that's the volume of a cone loki
 3 years ago

lokisanBest ResponseYou've already chosen the best response.0
ah...yes...kibosh the third. doing this too long...
 3 years ago

sstaricaBest ResponseYou've already chosen the best response.0
lol, np I do such mistakes too ^_^
 3 years ago

sstaricaBest ResponseYou've already chosen the best response.0
did you get the result?
 3 years ago

Smiley75Best ResponseYou've already chosen the best response.0
i guess..is it 3 centimeters?
 3 years ago

sstaricaBest ResponseYou've already chosen the best response.0
\[1131/40\pi = r^2\]\[r = \sqrt{1131/40\pi} = 9.42 = 9 cm \] substitute and solve for r ^_^
 3 years ago

sstaricaBest ResponseYou've already chosen the best response.0
do you get it now ? :)
 3 years ago
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