Which statements are true about a decagonal (10-sided) pyramid? Check all that apply. It has one face that is a decagon. It has two faces that are decagons. It has 11 faces. It has 20 edges. It has 20 vertices.

x/3-10=8

x/3=18

x=48

b

step-by-step explanation:

c.)

step-by-step explanation:

1. 16.64

a^2+b^2=c^2

pr^2=pq^2+qr^2

pr^2=14^2+ 9^2

pr^2=196+81

pr= sqr root of 277

16.64

2. 11.31

c^2-a^2=b^2

18^2- 14^2=b^2

b^2=324-196

b=sqr root of 126

b=11.31

hope it ! (btw im in connections academy to, good luck! )