Circumference of a circle
2 answers:
Answer:
Multiply the radius by 2 to get the diameter.
Multiply the result by π, or 3.14 for an estimation.
That's it; you found the circumference of the circle.
Step-by-step explanation:
Answer:
Step-by-step explanation:
the straight sides are just 4.5 *2 = 9 cm
the arcs are 2
r * Ф/360
where Ф= 50 for this problem
and r = 8
the inner arc is 2(3.5) *50/360 = 3.05432
the outer arc is 2(8)*50/360 = 6.98131
total is 19.0356
to 3 sig figs is 19.036 :)
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