Area of a Circle

Front

What is the formula for finding the area of a circle?

Back

A = π·r²

Front

What is the area of a circle with a diameter of 10cm?

Back

78.5 cm²

Front

Find the area of a circle with a radius of 3 cm.

Back

28.26 cm²

Front

What is the formula for the area of a circle given the radius?

Back

A = πr²

Front

What is a line from the center point to the edge of the circle called?

Back

Radius

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × Radius

Front

If the radius of a circle is 5 cm, what is the area?

Back

78.5 cm²

Front

What is the value of π (pi) approximately?

Back

3.14

Front

What is the circumference of a circle with a radius of 4 cm?

Back

25.12 cm (C = 2πr)

Front

How do you convert diameter to radius?

Back

Radius = Diameter / 2