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Q: If circle A has 4 times the radius of circle B how many times bigger is the area of circle A than circle B?
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How many times bigger than the 5 circle in the 10 circle?

if you double the radius (or diameter) , you get four times the area. area of a circle = pi * radius squared

The radius of a circle is multiplied by 7 Its area is times bigger than the original circle?

The relationship between a circle's radius and it's area is: a = πr2 so if the radius of the circle increases by 7 times, the area will increase by π72 times, or 49π, which is approximately equal to 153.938

How do you find the area of diameter of a circle?

Area of a circle = pi times radius squaredDiameter of a circle = 2 times radius

How do you find ratio of area to radius?

In a circle, the area of the circle is pi times the radius squared

How you get the area of a circle?

A= Area of the circle¶= Pi (About 3.14)r= Radius squared (Radius times radius)3.14 * Radius squared

How do you the area of a circle?

The area of a circle is: pi times radius squared

A circle has radius r what is the formula for the area of the circle?

For a circle or radius r, the area is given by: area = {pi}r2 (ie pi times the radius squared)

What is a area of a large circle?

Area of a circle is pi times the radius squared.

What is the area of a 36' circle?

Area of a circle: pi times radius squared

What is the area of a circle if the radius is 19mm?

The area is (pi) times (the radius)2 , just as it is in any other circle.

What is the area of a circle whose radius is 18 cm?

Area of a circle = pi (3.14) times the radius squared.

What is the area and circumference of a circle?

area: pi times radius squared circumference: pi times radius

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