If the radius of a cone is doubled, how would the volume change?

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest