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1.22cm.
radius:
circumference:
2.20cm.
radius:
circumference:
3.5cm.
radius:
circumference:
4.8drn.
diameter:
circumference:
1.22cm.
radius:
circumference:
2.20cm.
radius:
circumference:
3.5cm.
radius:
circumference:
4.8drn.
diameter:
circumference:
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Answer:
1. radius-11 mm²
circumference-2×3.14×11
=69.12
2. diameter-20cm²
radius-10cm²
circumference-2×3.14×10
=62.83cm²
3.diameter-10m²
circumference-2×3.14×5
=31.42m²
4. diameter-16dm²
circumference-2×3.14×8
=50.24dm²