Answer:
18, option B
Explanation:
Draw a hashmark like I have done in my drawing for each side exposed to the white.
Then count up all those hashmarks and voila, you have your answer!
B) 18
Perimeter = 2 + 2 + 1 + 2 + 1 + 2 + 1 + 4 + 1 + 2
= 4 + 3 + 3 + 5 + 3
= 7 + 8 + 3
= 10 + 8
= 18
The correct option is (B) 18
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