What is the surface area of a cylinder that is 5 centimeters high and has a diameter of 1.5 centimeters?

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?