Respuesta :
Answer:
127.17cm²
Step-by-step explanation:
Area of a semicircle: πr² ÷ 2
d = 18
r = 18/2 = 9
Area of a semicircle: 9²π ÷ 2 = 127.17cm²
Answer:
127.17 cm2
Step-by-step explanation:
hello :
area of the semicircle is : πr²/2 = 3.14(9)²/2 = 127.17 cm2 ....r=18/2=9cm