SOLUTION: a cone cannot have a surface area greater than 1000pi cm^2. what is the largest radius, correct to one decimal place, that will achieve this if the slant height is 20 cm?

Algebra ->  Surface-area -> SOLUTION: a cone cannot have a surface area greater than 1000pi cm^2. what is the largest radius, correct to one decimal place, that will achieve this if the slant height is 20 cm?      Log On

 

Hi,



Question states***

S = 

And  



     r^2 < 980   |note:  980 = 

        (tossing out negative solution for unit measure