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All Geometry math games
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Identify missing angle in triangle
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Identify missing angle in triangle with variable
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Identify missing angle in quadrilateral
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Identify missing side in triangle
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Identify missing side in triangle with variable
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Area of triangle
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Identify side of triangle given area
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Area of quadrilateral
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Identify side of quadrilateral given area
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Area of circle given radius
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Area of circle given circumference
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Circumference of a circle given radius
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Radius of a circle given circumference
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Volume of sphere, cone, cylinder
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Volume of cuboid
- All Geometry math games
- Identify missing angle in triangle
- Identify missing angle in triangle with variable
- Identify missing angle in quadrilateral
- Identify missing side in triangle
- Identify missing side in triangle with variable
- Area of triangle
- Identify side of triangle given area
- Area of quadrilateral
- Identify side of quadrilateral given area
- Area of circle given radius
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Area of circle given circumference
- Circumference of a circle given radius
- Radius of a circle given circumference
- Volume of sphere, cone, cylinder
- Volume of cuboid
The area of the circle is ?
Area
=
π
radius2
The area of a circle is the amount of space that is contained within the 2-dimensional object. It is calculated by the equation πr2
- π (spelled pi, but pronounced like a slice of pie) is the constant value of 3.14159...
- r equals the length of the radius of the circle, which is the length from the center of the circle to any edge
- Calculate the square of the radius by multiplying 4 inches by 4 inches, or 16 sq. inches
- Multiply that by π, which results in 16π, or approximately 50.24 sq. inches