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The radius of a circle is 7 m. what is the area of a circle?

≈ 154 m^2

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

What is the formula that connects the circumference of a circle with the radius?

C=2πr

The ... is π times the radius squared

area of a circle

A circular pond has a radius of 10 feet. What is the circumference of the pond?

62.8 feet

What shape is this?

It's circle

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

What's point A?

Centre

The circle has radius 21 cm. What is its circumference?

≈ 132 cm

What kind of number π is?

It is an irrational number. It connects the circumference of a circle with the radius

The radius of a circle is 14 km. What is the area of a circle?

≈ 616 km^2

What is the formula to connect the diameter with the area of a circle?

A = π (d/2)^2

The diameter of a circle is 14 m. what is the area of a circle?

≈ 154 m^2

The circumference of a circle is 66 m. What is the diameter?

≈ 21 m

What is AB?

Radius

The circle has radius 21 cm. What is its area?

≈ 1386 cm squared

The radius of a circle is 3.5 mm, what is the circumference of this circle?

≈ 22 mm

What is the formula to connect the radius of a circle with the area of a circle?

A = π × r^2

Radius = 7, Diameter = ?

14

Is there a way to connect the diameter with the area of a circle?

Yes, there is

The circle has diameter 14 inches. What is its circumference?

≈ 44 inches

What is circumference of a circle?

The circumference of a circle is the linear distance of the circle's edge

A circular table has diameter 1.4 m. What is the area of the top of the table?

1.54 m^2

The diameter of a circle is 7 km, what is the circumference of this circle?

≈ 22 km

The circle has diameter 14 inches. What is its area?

≈ 154 inches squared

What is the radius?

5cm

What is BC?

Diameter

Diameter = 10, Radius = ?

5

What is the formula that connects the circumference of a circle with the diameter?

C=πd