Question

teacher :
solve the missing elements for each problem. use 3.14 for π. area = πr², c = πd
1)
radius:
diameter: 10 inches
circumference:
area:
2)
radius:
diameter: 26 ft
circumference:
area:
3)
radius: 18 yards
diameter:
circumference:
area:
4)
radius:
diameter: 20 cm
circumference:
area:
5)
radius: 7 mm
diameter:
circumference:
area:
6)
radius:
diameter: 30 inches
circumference:
area:
7)
radius: 8 ft
diameter:
circumference:
area:
8)
radius: 20 yards
diameter:
circumference:
area:
9)
radius: 19 cm
diameter:
circumference:
area:

Explanation:

Answer:

1. Radius: $5$ inches; Circumference: $31.4$ inches; Area: $78.5$ sq inches
2. Radius: $13$ ft; Circumference: $81.64$ ft; Area: $530.66$ sq ft
3. Diameter: $32$ yards; Circumference: $100.48$ yards; Area: $803.84$ sq yards
4. Radius: $10$ cm; Circumference: $62.8$ cm; Area: $314$ sq cm
5. Diameter: $14$ mm; Circumference: $43.96$ mm; Area: $153.86$ sq mm
6. Radius: $15$ inches; Circumference: $94.2$ inches; Area: $706.5$ sq inches
7. Diameter: $16$ ft; Circumference: $50.24$ ft; Area: $200.96$ sq ft
8. Diameter: $40$ yards; Circumference: $125.6$ yards; Area: $1256$ sq yards
9. Diameter: $38$ cm; Circumference: $119.32$ cm; Area: $1133.54$ sq cm