A rectangle has a length of 1.51.51.5 cm and a diagonal of 2.52.52.5 cm. What is its area?
3.0 cm23.0 \text{ cm}^23.0 cm2
2.25 cm22.25 \text{ cm}^22.25 cm2
3.75 cm23.75 \text{ cm}^23.75 cm2
1.5 cm21.5 \text{ cm}^21.5 cm2