Answer:
1) 18.84 in
2) 37.68 yd
3) 25.12 ft
4) 75.36 yd
5) 26.376 in
6) 47.1 m
7) 59.11 cm
8) 92.52 in
My terminology:
C - Circumference
P - Perimeter
D - Diameter
R - Radius
Pi = 3.14
Things to keep in mind:
C = Pi * 2R
C = Pi * D
D = 2R
Step-by-step explanation:
1) C = Pi * 2R = 3.14 * 3 * 2 = 18.84 (in)
2) C = Pi * 2R = 3.14 * 6 * 2 = 37.68 (yd)
3) C = Pi * D = 3.14 * 8 = 25.12 (ft)
4) C = Pi * D = 3.14 * 24 yrd = 75.36 (yd)
5) C = Pi * 2R = 3.14 * 4.2 * 2 = 26.376 (in)
6) C = Pi * D = 3.14 * 15 = 47.1 (m)
7) P = Pi * D/2 + D = 3.14 * 23/2 + 23 = 36.11 + 23 = 59.11 (cm)
8) P = Pi * R + 2R = 3.14 * 18 + 36 = 56.52 + 36 = 92.52 (in)
