Answer/Step-by-step explanation:
Area of circle, A = πr²
Circumference of circle, C = 2πr or πd
1. r = 14 in.
A = π*14² = 615.75 = 615.8 in.² (nearest tenth)
C = 2*π*14 = 87.96 = 87.0 in (nearest tenth)
2. r = ½(16) = 8 ft
A = π*8² = 201.06 = 201.1 ft² (nearest tenth)
C = 2*π*8 = 50.27 = 50.3 ft (nearest tenth)
3. r = 1.7 cm
A = π*1.7² = 9.08 = 9.1 cm² (nearest tenth)
C = 2*π*1.7 = 10.68 = 10.7 cm (nearest tenth)
4. r = ½(13) = 6.5 m
A = π*6.5² = 132.73 = 132.7 m² (nearest tenth)
C = 2*π*6.5 = 40.84 = 40.8 m (nearest tenth)