Question

Alex designed the model of a cylindrical water tank to be installed in a park. The model has a radius of 5 cm and a height of 14 cm. The dimensions of the actual water tanks that will be installed in the park are 8 times larger than the model. The total surface area of the actual water tanks, rounded to the nearest whole number, is _________ cm2. use 22/ 7 for pi .

Answer 1

@monokerous

Answer 2

@AccessDenied

Answer 3

formula for area of cylinder:- 2pi.r^2+2pi.rh

surface area for model cylinder:- 2*22/7*5*5+ 2*22/7*25*14=157.14+2200
=2357.14cm^2

surface area for larger model:- 2357.14*8

=18857.12cm^2

Answer 4

=18857

Answer 5

Okay , i think i get it now . Thanks a bunch