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Mathematics 14 Online
OpenStudy (anonymous):

Alex designed the model of a cylindrical water tank to be installed in a park. The model has a radius of 6 cm and a height of 13 cm. The dimensions of the actual water tanks that will be installed in the park are 6 times larger than the model. The total surface area of the actual water tanks, rounded to the nearest whole number, is _________ cm2.

OpenStudy (anonymous):

8212?

OpenStudy (anonymous):

468?

hartnn (hartnn):

i am getting 25786 !!

OpenStudy (anonymous):

how did u get it>?

hartnn (hartnn):

6 times larger means new radius is r=36 and new height is h=78 total surface area=2*pi*r*(r+h)=25786

OpenStudy (anonymous):

Oo.. thank u again.

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