18. The outline of a sign for an ice-cream store is made by placing 3/4 of the circumference of a circle with radius 2 feet on top of an isosceles triangle with height 5 feet, as shown above. What is the perimeter, in feet, of the sign?
(A) 3∏+3√3
(B) 3∏+6√3
(C) 3∏+2√33
(D) 4∏+3√3
(E) 4∏+6√3
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