A circle is drawn within a square as shown. What is the best approximation for the area of the shaded region?

Use 3.14 to approximate pi.

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.

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?