Hi please help There is a question in Maths, the question is The figure consists of a semicircular arc of radius 15 cm and three sides of a rectangle of height

Hi please help

There is a question in Maths, the question is

The figure consists of a semicircular arc of radius 15 cm and three sides of a rectangle of height 30 cm. [pie: 3.14]
(i) find the length of the semicurcular arc BCD.

(ii) find the perimeter of the figure​