Pls help me i’m so stuck

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.

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x