What percentage of the circle is red?

Here are the percentages of the circles that are red:

12. What percentage of the circle is red?

• Top-left circle: The circle is divided into 4 equal parts. 1 of these parts is red. Fraction red: $\frac{1}{4}$ Percentage red: $\frac{1}{4} \times 100\% = \boxed{\text{25\%}}$

• Top-right circle: The circle is divided into 2 equal parts. 1 of these parts is red. Fraction red: $\frac{1}{2}$ Percentage red: $\frac{1}{2} \times 100\% = \boxed{\text{50\%}}$

• Bottom-left circle: The circle is divided into 4 equal parts. 3 of these parts are red. Fraction red: $\frac{3}{4}$ Percentage red: $\frac{3}{4} \times 100\% = \boxed{\text{75\%}}$

• Bottom-right circle: The circle is divided into 4 equal parts. 0 of these parts are red (all parts are white). Fraction red: $\frac{0}{4} = 0$ Percentage red: $0 \times 100\% = \boxed{\text{0\%}}$