A cylindrical container of height 18 cm is open at one end. If the radius of the circular end is 10 cm, what is the external surface area, correct to 2 decimal places?

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Can some one explain this i got sent this. is this a threat i’m scared