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This is assuming that the four circles are arranged in a square, with each circle touching two other circles at their tangents.
First, you need to determine the area created by drawing a square between the center points of all of the circles.
Circle radius = 10
Side of square = 10 * 2, or 20
Area of square = 20 * 20, or 400
Now that you have that area, you can deduct the four quarters of the circles inside the square area. You can do it the long way, but four quarters of identical circles equals the area of one of the circles
Area of circle = pi * r^2
= pi * 100
=3.14159 *100
=314.159
Square Area - (4) quarter circle area
400 - 314.159
= 85.841
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If The area of one circle is four times as large as a smaller circle with a radius of 3 inches The radius of the larger circle is?
6
What happens to the area of the circle when the diameter is doubled?
As the area of a circle A equals pi times the radius squared, and doubling the diameter means multiplying the radius by four, the area is multiplied by 16 when you double the diameter.
If the radius of a circle is cut in half what happens to the area?
it is cut down by a factor of four since it is proportional to square of radius
If the area of one circle is four times as large as a smaller circle with radius of 3 inchesThe radius of the larger circle is?
6 inches pi*32 = 9*pi square inches (smaller circle) pi*62 = 36*pi square inches (larger circle)
Find the area of the largest square incribed in a circle?
A circle of radius, r, has area pi r2. The largest square inside it is made up of four isosceles triangles whose equal sides are of length, r, and thus has area 1/2 r2. Thus the area of the contained square is 2 r2.
What fraction of the area of a circle of radius 5 lies between concentric circles of radius 3 and 4?
The area of a circle with radius 5 is 25 pi. Concentric circles with radius 3 and 4 have areas of 9 pi and 16 pi. The concentric circle with radius four consumes the circle with radius 3. 25 pi minus 16 pi leaves 9 pi of the circle with radius 5 left over. 16 pi is slightly over three-fifths of the circle with radius 5.
What is the area of a circle which is four inch radius?
A four-inch radius circle has an area of about 50.27 square inches.
Four circular flower beds each with a radius of 10 meters the way they're arranged forms a space between them i need to know the area in meters squared of the section of one flower bed and the space?
Imagine 4 circles just touching, like this OO .............................................................. OO only closer. Draw a square connecting the centres of the 4 circles. Given the circles each have a radius of 10 metres the length of each side of the square is (10+10) =20 metres and the area of the square is 400 square metres. The area of each quarter of the circle that is within the square is one quarter of pi times r squared so the four quarters = 100pi square metres so the space between the circles is the difference.
ByWhat percentage is the cross sectional area of a circle increased if the radius is doubled?
300. (Doubling the radius multiplies the area by four times.)
Doubling the radius of a sphere increases the surface area by a factor of?
Four...
What is the area of a circle that has a four inche radius?
50.26 squre inches
A large circle has a radius of 10cm Given four congruent circles tangent to one another within the large circle what is the radius of the largest circle which will fit in the middle?
Letting x be radius of the 4 circles, then (squareroot(2x^2))+x=10, or x(1+sqrt2)=10. Then radius of circle in middle is ((2*10)-4x)/2. So I get radius of circle in middle = 1.715729 approximately.
What is the surface area of a sphere the radius of four?
201.1 square units, approx.
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
If The area of one circle is four times as large as a smaller circle with a radius of 3 inches The radius of the larger circle is?
6
What happens to the area of the circle when the diameter is doubled?
As the area of a circle A equals pi times the radius squared, and doubling the diameter means multiplying the radius by four, the area is multiplied by 16 when you double the diameter.
How do you find the area of a circle only knowing the radius?
If you know the radius (say it's 4), square the radius and multiply that number by pi. So for a radius of four, it would be 4 X 4 = 16 X 3.14 = 50.24, the area of the circle.
