Answer:
540°
Step-by-step explanation:
The sum of interior angles in a polygon is equal to 180(x-2) where x is the number of sides. Since there are 5 sides, 180(5-2)=540°.
Answer: It would be the second option.
Step-by-step explanation:
If angles 7 and 1 are supplementary, so are 5 and 1 because angle 7= angle 5. Supplements are not always equal. Imagine a more acute angle. One would be, say, 30, and the other would be 150. These numbers are different, so it would be the second option.
Answer:
12
units^3
Step-by-step explanation:
V=1/3Bh
=1/3 Area of the base times height
Area of base:
r^2=4
height=9
4
times 9=36
1/3 of 36
=12
Answer: 20.48
Step-by-step explanation:
use the pythagorean theorem for the diagnal sides
3^2+3^2=c^2
9+9=c^2
18=c^2

this gives you 4.24
now add 6+6+4.24+4.24 to get 20.48