Geometry Flashcard Perimeter, Circumference, Area

Front

What does perimeter mean?

Back

The distance around the shape.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = 2 * (length + width).

Front

What is the formula for the area of a rectangle?

Back

Area = length * width.

Front

What is the formula for the area of a circle?

Back

Area = π * radius².

Front

What does circumference mean?

Back

The distance around a circle.

Front

How do you calculate the circumference of a circle?

Back

Circumference = 2 * π * radius.

Front

If a rectangle has a length of 10 cm and a width of 5 cm, what is its area?

Back

50 cm².

Front

If a circle has a radius of 7 cm, what is its circumference?

Back

Approximately 43.98 cm.

Front

What is the area of a triangle with a base of 8 cm and a height of 5 cm?

Back

20 cm².