Unit Review 1-5

Front

What is the formula to calculate the area of a circle?

Back

Front

How do you find the percentage of students who like basketball if 9 out of 18 students said they like it?

Back

To find the percentage, divide the number of students who like basketball by the total number of students and multiply by 100. So, (9/18) * 100 = 50%.

Front

What is Pi in relation to circles?

Back

Pi (π) is a constant that represents the ratio of the circumference of a circle to its diameter, approximately equal to 3.14.

Front

What is the diameter of a circle?

Back

The diameter is a line segment that passes through the center of the circle and connects two points on its edge. It is twice the length of the radius.

Front

If a circle has a diameter of 6 meters, what is its radius?

Back

The radius is half of the diameter. Therefore, if the diameter is 6 meters, the radius is 3 meters.

Front

What is the area of a circle with a radius of 3 meters?

Back

Front

True or False: A diameter is a line segment that goes from the center to the edge of a circle.

Back

False. A diameter goes from one edge of the circle to the opposite edge, passing through the center.

Front

What is the relationship between diameter and circumference?

Back

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100.

Front

What is the formula for the circumference of a circle?

Back