Question: What is the radius of a circle if the area is 154 square cm? (Use π = 22/7)

Options:

1. 6 cm
2. 7 cm
3. 8 cm
4. 9 cm

Correct Answer: 7 cm

Solution:

Area of a circle = πr². Thus, 154 = (22/7)r². Solving gives r² = 154 * 7 / 22 = 49, so r = 7 cm.