Question

find the perimeter and area of a semicircle whose diameter is 18.2 CM

pls no nonsense answer only step wise answer if any one will give nonsense answer I will report it to brainly authorities and if any one will give me clear perfect step wise answer I will that answer brainlist answer of this question is 46.8 cm and 130.13 cm square I need only step ​

Answer 1

Step-by-step explanation:

diameter = 2r

18.2 = 2r

9.1 = r

perimeter of semicircle = Pie × r + 2r

= 22/7 ×9.1 + 2× 9.1

= 22 × 1.3 + 18.2

= 28.6 + 18.2

= 46.8 cm

Area of semicircle = 1/2 ×pie × r^2

= 1/2 × 22/7 × 9.1 × 9.1

= 11 × 1.3 × 9.1

= 14.3 × 9.1

= 130.13 cm^2