I felt his behavior was very free.

It's difficult to calculate the area of this hexagon.

Please calculate the area of this right-angled triangle.

The signal from the cell phone relay-station in this area is weak.

I analyze data using a spreadsheet software.

Roundworms are an important part of the soil and contribute greatly to the health and fertility of the soil.

He was hit hard in the solar plexus during the boxing match.

Let's calculate the area of this right-angled triangle.

I am majoring in econometrics at university.

My father has been suffering from sciatica for a long time.