Area and Circumference of Circles

Front

Is the red line a radius or diameter of the circle?

Back

Radius

Front

What is the area of this circle? Use the Pi button.

Back

113.1 cm²

Front

Circumference

Back

The distance around a circle.

Front

What is the area of a circle?

Back

The space inside the circle.

Front

The homeowners association wants to enclose the playground in a fence. How much fencing will they need to purchase? Would you need to find the Area or Circumference? Options: area, circumference, neither

Back

circumference

Front

What is the radius of this circle? Options: 18, 36, 9, 8

Back

9

Front

What is the distance around a bowl with a diameter of 14 cm?

Back

43.98 cm

Front

What is the formula for area of a circle?

Back

A = π×r²

Front

What is the most accurate definition of π?

Back

The ratio of the circumference of any circle to its diameter.

Front

The radius is...
Options: a line that crosses through the center and touches each edge, the center point of a circle, a line from the center point to the edge of the circle, an element in science

Back

a line from the center point to the edge of the circle