Answer:
-71
Step-by-step explanation:
let 'n' = a number
2(143 + 2n) = 0n + 2
2(143 + 2n) = 2
143 + 2n = 1
2n = -142
n = -71
0.6858 meters
The ANSWER is 18*3= 54
total angle inside pentagon = 540 degrees so 3(8x)+2(3x)=540 and that is 30x=540
1157 / 500
c