First you add 3 twice to both sides of the swimming pool
12 + 6 = 18
15 + 6 = 21
The perimeter is the sum of all sides therefore
18 + 18 + 21 + 21 = 78
The answer is A
Answer:
3 pi
Step-by-step explanation:
We already know that the sum of the angles adds up to 360.
Therefore we get 73+ 104+ 43 + x = 360, where x = 140
arc length =
were the angle is 140 and r = 4. The radius was given.
Hope this helps.
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