Answer:
Step-by-step explanation:
First count the number of sides. There are 6 sides.
Now use the formula
(n - 2) * 180 To determine the total of all 6 angles.
(6 -2) * 180 =
4 * 180 = 720
Is that a 9 in x + 9 [lower left]? I'll assume so. Edited to show it was a 4.
x + 4 + 120 + x + 50 + 140 + 112 + x = 720 Combine
3x + 4 + 120 + 50 + 140 + 112 = 720
3x + 426 = 720 Subtract 431 from both sides
3x = 720 - 426 Combine
3x = 294 Divide by 3
x = 294/3
x = 98
390.66 meters
perimeter = 2(87) + 3.14(69)
= 174 + 216.66
= 390.66
