Solve a cylinder of radius r cm and height h cm has a curved surface area A cm, where
a) obtain a formula for h
b) find the value of h when A = 93 ,R = 2.5 and = 3.1

Anna is no more than 3 years older than 2 times jamie’s age. jamie is at least 14 and anna is at most 35. which system of linear inequalities can be used to find the possible ages of anna, a, and jamie, j?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.