1. A = π × r²
A = 3.14 × 18²
A = 3.14 × 9²
A = 254.34 cm²
2. A = π × r²
A = 3.14 × 12²
A = 452.16 mm²
3. A = π × r²
A = 3.14 × 6.25²
A = 122.65 mm²
4. A = π × r²
A = 3.14 × 20²
A = 1,256 cm²
5. A = π × r²
A = 3.14 × 17²
A = 907.46 cm²
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ANSWER:
1. A = π × r²
A = 3.14 × 18²
A = 3.14 × 9²
A = 254.34 cm²
2. A = π × r²
A = 3.14 × 12²
A = 452.16 mm²
3. A = π × r²
A = 3.14 × 6.25²
A = 122.65 mm²
4. A = π × r²
A = 3.14 × 20²
A = 1,256 cm²
5. A = π × r²
A = 3.14 × 17²
A = 907.46 cm²
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