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A circular table has diameter 1.4 m. What is the area of the top of the table?
1.54 m^2
A circular pond has a radius of 10 feet. What is the circumference of the pond?
62.8 feet
The circle has radius 21 cm. What is its area?
≈ 1386 cm squared
The circle has diameter 14 inches. What is its area?
≈ 154 inches squared
The circle has radius 21 cm. What is its circumference?
≈ 132 cm
The circle has diameter 14 inches. What is its circumference?
≈ 44 inches
We have a circular garden with a radius of 5 meters. What is its area?
Area = πr^2 = π × (5 m)^2 = 78.5 m^2
The ... is π times the radius squared
area of a circle
You walk around a circle which has a diameter of 100m, how far have you walked?
314m
The radius of a circle is π m. What is the area of a circle?
= π^3 (or ≈ 31 ) m^2
The diameter of a circle is 14 m. what is the area of a circle?
≈ 154 m^2
The radius of a circle is 14 km. What is the area of a circle?
≈ 616 km^2
The radius of a circle is 7 m. what is the area of a circle?
≈ 154 m^2
What is the formula to connect the radius of a circle with the area of a circle?
A = π × r^2
What is the formula to connect the diameter with the area of a circle?
A = π (d/2)^2
Is there a way to connect the diameter with the area of a circle?
Yes, there is
The circumference of a circle is 66 m. What is the diameter?
≈ 21 m
The diameter of a circle is 7 km, what is the circumference of this circle?
≈ 22 km
The radius of a circle is 3.5 mm, what is the circumference of this circle?
≈ 22 mm
What is the formula that connects the circumference of a circle with the diameter?
C=πd
What is the formula that connects the circumference of a circle with the radius?
C=2πr
What is circumference of a circle?
The circumference of a circle is the linear distance of the circle's edge
What kind of number π is?
It is an irrational number. It connects the circumference of a circle with the radius
Diameter = 10, Radius = ?
5
Radius = 7, Diameter = ?
14
What is the radius?
5cm
What is BC?
Diameter
What is AB?
Radius
What's point A?
Centre
What shape is this?
It's circle
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