I am learning about areas of regular polygons and I am using the equation A= 1/2 x a x p. a = apothem and p =perimeter. I have a diagram that is a triangle and the only thing i am given is one side of the triangle, the right side, it is 6. How would I find the apothem?

Dropping less than two inches per mile after emerging from the mountains, a river drains into the ocean. one day's discharge at its mouth, 5.6 trillion gallons, could supply all of country a's households for seven months. based on this statement, determine how much water an average household uses each month. assume that there are 100 million households in country a. country a uses approximately nothing gallons per household per month.

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?