Match the terms (1.1.1 to 1.1.5) with the correct definitions (A to I) from TABLE 1.

1.1 Diameter

The diameter $d$ of a circle is twice the radius $r$.

$$d = 2r$$

Substitute $r = 12$ cm:

$$d = 2 \times 12~\mathrm{cm} = 24~\mathrm{cm}$$

$\boxed{24~\mathrm{cm}}$

1.2 Area

The area $A$ of a circle is given by $A = \pi r^{2}$.

$$A = \pi r^{2}$$

Substitute $r = 12$ cm:

$$A = \pi (12~\mathrm{cm})^{2} = \pi \times 144~\mathrm{cm}^{2} = 144\pi~\mathrm{cm}^{2}$$

$\boxed{144\pi~\mathrm{cm}^{2}}$

1.3 Radius

The radius is given as $r = 12$ cm.

$\boxed{12~\mathrm{cm}}$