Answer:
98 cm
Explanation:
The formula for the perimeter of a semicircle is:
Perimeter = πr + 2r
Where r is the radius of the semicircle.
In this case, r = 19 cm, so the perimeter is:
Perimeter = π(19 cm)+2(19 cm)
=59.71 cm+38 cm
=97.71 cm
Rounded to 1 DP, the perimeter is 98 cm.