So since the formula for the sum of a polygon's interior angles is (n-2)180, just make that equal to 2520 and solve for n, which is the number of sides.
STEPS:
1) (n-2)180 = 2520
2) n-2 = 2520/180
3) n-2 = 14
4) n = 16
So the polygon must have 16 sides
Answer:
416.52 cm cubed
Step-by-step explanation:
first find the volume of the rectangle using LxWxH and you get 360
then get the diamiter of the semi sphere by seing that it is the same size as the width. then to get the radius divide the diamiter by 2. the find the volume of the semi sphere using 2π3^r/3 and you get about 56.52 ( i say about because i used 3.14 instead of all of pie.) then add 360 and 56.52 and you get the volume of this which is 416.52 cm cubed. dont forget the cubed!
could i get brainliest? :)
