Answer:
2 × n - 1 = x
Step-by-step explanation:
for example:
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60°; all of of the angles of a triangle add up to 180° so 180 divided by 3 equals 60°.
Answer:
390.66 meters
Step-by-step explanation:
perimeter = 2(87) + 3.14(69)
= 174 + 216.66
= 390.66