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The area of a circle of radius r is pi*r*r

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Q: What is the area of a cirle with a radius of 5 in?
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Related questions

The radius of a cirle is what percent of the diameter?

the radius of a cirle is what percent of the diameter


What is the area of a circle with a diamiter of 46?

The area of a cirle is: PI * r2 Where "r" is the radius, and PI is approximately 3.14. Hint: A radius is half of the diameter.


What is the area of a cirle with a radius of 12 ft?

The formula is pi (3.14) x radius x radius 3.14 x 12 x 12 = 446.4


Is the radius of a cirle half of the diameter?

Yes.


What is the area of a circle with radius 2?

To find the area of a cirle you multiple pi (3.14) by the radius squared, so you would have to find 3.14 times 4, which is 15.7.


The formula for circumference of a cirle is?

pi*radius squared


What is the area of a cirle if diameter is 16?

Area of a circle is pi r^2 diameter is twice the radius. 3.14*8*8=64*pi or approximately 200.96


Which of these is a radius in a cirle?

The line from the centre of the circle to any point on its circumference


What is the formula for the circumference of the cirle?

circumference of a circle = 2*pi*radius or pi*diameter


Area of a cirle with a circumference 66cm?

The area is 346.639 cm2


What is the area of a circle with the radius of 5?

A circle with a radius of 5 units has an area of 78.54 square units.


You can see a grey circle with a little white cirle in it with a radius of 3 What is the radius of the diagram's larger circle if the area of the shaded region is 72 pie?

Area of a circle with radius r = pir2Area of the largest circle = Area of the smallest circle + Area of the shaded regionSince areas of the smallest circle and the shaded region are 9pi and 72pi, the Area, A, of the largest circle isA = 9pi + 72pi = 81pi, where r2 = 81.Thus, the radius of the largest circle is 9