Answer:
Missing side = 6.7cm
Perimeter = 42.438cm
Step-by-step explanation:
The missing side will be the diameter of the semicircle
Missing side = 9.2cm - 2.5cm
Missing side = 6.7cm
Perimeter of the figure = Perimeter of rectangle + Circumference of the semi circle
Perimeter of rectangle = 2(L+W)
Perimeter of rectangle = 2(9.2 + 1.5)
Perimeter of rectangle= 2(10.7)
Perimeter of rectangle = 21.4cm
Get the circumference of the semicircle
Circumference of the semi circle= πd
Circumference of the semi circle = 3.14 * 6.7
Circumference of the semi circle = 21.038
Perimeter of the figure = 21.4cm + 21.038cm
Perimeter of the figure = 42.438cm
