Q: What is the area of the circle if the radius is 1cm?

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The radius will stay as 1cm but the area of a circle is: pi times radius squared

The area of a circle is calculated from the formula Pi x r2 . A 1cm diameter circle has a radius of 0.5cm, thus it has an area of 0.785cm2

2cm; the diameter of a circle is twice its radius.

The area of a circle of radius 21 is 1386

Area of a circle = pi*radius squared

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The radius will stay as 1cm but the area of a circle is: pi times radius squared

2cm; the diameter of a circle is twice its radius.

The area of a circle is calculated from the formula Pi x r2 . A 1cm diameter circle has a radius of 0.5cm, thus it has an area of 0.785cm2

1cm

0.5 cm

The radius is half the diameter = 1cm

8mm

The area of a circle if the radius is 9m 254.5m2

The radius of a circle with the area of 36 is 3.385

The area of a circle of radius 21 is 1386

Area of a circle = pi*radius squared

The area of a circle with a radius of 14.4 is 651.4