In a figure there's a pentagon with 5 sides with the radius of 4 1. How can you find the apothem of this figure? Please apply trig functions (sin, cos, tan) when answering this question.

2. Once you find the apothem, how can you find the perimeter?

3. Once you find the perimeter of this figure, what is the area of this polygon using the A=1/2 (apothem)(perimeter)

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.