Answer:
1. A = (3.14)(7m)²
= (3.14)(49m²)
2. A = (3.14)(10in)²
= (3.14)(100in²)
3. A = (3.14)(100cm)²
= (3.14)(10,000cm²)
4. A = (3.14)(50cm)²
= (3.14)(2,500cm²)
5. A = 1/4(3.14)(18m)²
= 1/4(3.14)(324m²)
= 1/4(1,017.36m²)
= 1,017.36m²/4
6. A = 1/4(3.14)(73cm)²
= 1/4(3.14)(5,329cm²)
= 1/4(16,733.06cm²)
= 16,733.06cm²/4
7. A = 1/4(3.14)(25cm)²
= 1/4(3.14)(625cm²)
= 1/4(1,962.5cm²)
= 1,962.5cm²/4
8. A = 1/4(3.14)(30in)²
= 1/4(3.14)(900in²)
= 1/4(2,826in²)
= 2,826in²/4
