12. A regular octagon has a perimeter of 56 feet. Find the length of each side.
The length of a side is:
A. 9.3 ft
B. 7 ft
C. 14 ft
D. 3.5 ft
19. Find the number of sides of a regular polygon if the sum of the measures of the interior angles is .
The number of sides is:
A. 9
B. 7
C. 5
D. 3
2007-11-08 02:12:27 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
19.900 degrees
is whats missing
2007-11-08 02:21:39 · update #1
56/8 = 7 ft
Question incomplete.
2007-11-08 02:19:45 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋
12. is B. 7 - just divide the perimeter by eight, the number of sides of an octagon.
For 19, the formula for this is the (angle sum)/180 + 2 = number of sides. So 900/180+2 = 7.
2007-11-08 10:24:32 · answer #2 · answered by decivilian 3 · 0⤊ 0⤋
Do your own homework.
2007-11-08 10:21:13 · answer #3 · answered by Anonymous · 0⤊ 1⤋