Seudónimo Seudónimo
  • 03-06-2017
  • Mathematics
contestada

Find the area of the regular 20​-gon with radius 77 mm.

Respuesta :

wolf1728
wolf1728 wolf1728
  • 03-06-2017
The area of a polygon equals
area = circumradius² * number of sides * sin (360 / # of sides) / 2
area = 77² * 20 * sin (360 / 20) / 2
area = 77² * 20 * sin (18) / 2
area = 118,580 * 0.30902 / 2
area = 36,643.59 / 2
area = 18,321.8 square millimeters


Answer Link

Otras preguntas

what are two human uses for mosses?
Work out the number that is halfway between 27 times 38 and 33 times 38.Show your working out aswell.
Why does a pendulum eventually stop swinging?
When was the battle of Hastings?
20% of my money is £2.55 What is 2/5 of it?
What are enzymes also known as? What do enzymes do to biological reactions? What do we call the special shape on an enzyme molecule? What are enzymes made of? W
Jonathan has been on a diet since January 2013. So far, he has been losing weight at a steady rate. Based on monthly weigh-ins, his weight, w, can be modeled by
How many light sources do you know Pls list them
What is the solution to this system of linear equations: y-x=4 and y+2x=1 1) (-1,3) 2) (0,4) 3) (1,-1) 4) (-3,3)
How do you do this algebra question