What is the area of the semicircle (use 3.14 for ρ)?

254.34 cm2
127.17 cm2
113.04 cm2
56.52 cm2
Here is the link to the picture
https://aoa.sooschools.com/media/g_mat06_2016/8/img_semicircle_area.gif

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

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

129

Step-by-step explanation:

the mean is the average of the data. including x, there are 6 data points

average = total/6

average = (98 + 123 + 105 +114 +109 + x) / 6

113 = (98 + 123 + 105 +114 +109 + x) / 6

113 = (549+ x) / 6

678 = 549 + x

x = 129