10.4, 10.6, and 10.7 Practice

Front

What is the circumference of a circle?

Back

The circumference is the distance around a circle, calculated as C = 2πr, where r is the radius.

Front

What is the formula for the area of a circle?

Back

The area of a circle is given by A = πr², where r is the radius.

Front

What is the relationship between the diameter and radius of a circle?

Back

The diameter is twice the radius: d = 2r.

Front

What is the definition of perimeter?

Back

Perimeter is the total distance around a two-dimensional shape.

Front

How do you find the perimeter of a rectangle?

Back

The perimeter of a rectangle is calculated as P = 2(length + width).

Front

What is the formula for the area of a rectangle?

Back

The area of a rectangle is given by A = length × width.

Front

What is the definition of a trapezoid?

Back

A trapezoid is a four-sided figure (quadrilateral) with at least one pair of parallel sides.

Front

How do you find the area of a trapezoid?

Back

The area of a trapezoid is calculated as A = (1/2) × (base1 + base2) × height.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing the relative size of one quantity to another.

Front

What does it mean if two shapes have the same area ratio?

Back

If two shapes have the same area ratio, their areas are proportional, but their perimeters may differ.