Pls help me with this. i dont want to fail.

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.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

The ratio of the height of two similar cylinders is 4 to 3 what is the ratio of their volumes