Answer:
r=21.01 cm
Step-by-step explanation:
2r = diameter
Circumference of a circle = pi 2r
difference = 90
pi2r - 2r =90
2r (pi-1) =90
90/(2(pi-1) = r = 21.01 cm
15 cm
30 seconds
10x10=100 3x10=30
x= -623/18
Hope it helps for you,buddy!
3 : 5
x : 125
125 ÷ 5 = 25
25 × 3 = 75
no. of hens = 75
