Answer:
P(t) = P(t) = 118,2568 cm
Explanation:
The shape is made of half circle and an equilateral triangle ( this is a triangle with three equal sides ) therefore as the diameter of the circle is one of the sides of the triangle we can write:
Total perimeter P(t) is: the length of the semi-circle plus the length of the two sides of the triangle then:
The length of the semi-circle s is: s = π*d
And the length of one side of the triangle is 23 cm
P(t) = π*d + 2*d
P(t) = 3,1416*23 + 2*23
P(t) = 72,2568 + 46
P(t) = 118,2568 cm