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How much is the area of a circle with a diameter of 5cm than a circle with a diameter of 2 cm?
The ratio of areas is the square of the ratio of the sides.
Ratio of sides is 5:2, so ratio of areas is 52:22 = 25:4
So the larger circle has an area that is 25/4 = 61/4 (= 6.25) times the area of the smaller circle.
The difference in areas is given by taking the area of the smaller circle from the area of the larger circle.
area_circle = π x radius2
radius = diameter/2
larger_area = π x (5/2)2 cm2
smaller_area = π x (2/2)2 cm2
⇒ difference = larger_area - smaller_area
= (π x 25/4 - π) cm2
= 21π/4 cm2
≈ 16.49 cm2
What else can I help you with?
What is the diameter of a circle that's area is 153.86in squared?
The diameter is approximately 7 inches.
Is the diameter of the circle always greater than the radius of the circle?
No, only if the diameter is bigger than the radius is the radius smaller than the diameter.
How many times is the circumference shorter than the diameter of a circle?
Given a diameter d, the circumference of a circle is Pi*d. Thus the circumference is Pi times larger than the diameter.
What is the diameter of a 30 inch circle?
The diameter of a circle is the distance across the circle passing through its center. In this case, the diameter of a 30-inch circle would be 30 inches. It is important to note that the diameter is always twice the length of the radius, which is the distance from the center to any point on the circle's edge.
Can a circle have more than one diameter?
Yes.
How much greater is the area of the square than that of the circle if the diameter of the circle is 10?
The answer depends on the square!
Whats the area of a 9 inch diameter?
If you mean a circle area than A = 63.61725 inch². Area A = pi times diameter² / 4.
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
What is the diameter of a circle that's area is 153.86in squared?
The diameter is approximately 7 inches.
Is the diameter of the circle always greater than the radius of the circle?
No, only if the diameter is bigger than the radius is the radius smaller than the diameter.
How much greater is the diameter of a circle that is 12 inches than a 10 inch diameter circle?
Area = pi*r2A ratio.A = pi*(12)2-------------A = pi*(10)2cancel all like factors144/100= 1.44 times larger==============
Is the area of a circle bigger than the area of a square?
It depends on the diameter of the circle and the width of the square, if they are the same then the answer is no. If you draw yourself a square then inscribe a circle with a radius of half the length of a side of the square, the circle will fit inside the square but the corners of the square will be outside the circle. Thus by inspection the area of the square is larger than the area of the circle.
How much approximately is three times the diameter of a circle?
That's 41/2% less than the circumference of the circle.
If the circumference of a circle is 18.6 cm more than its diameter then what is the diameter of the circle?
8.68
What shape is constant in diameter other than a circle?
None. The only shape with a diameter is the circle.
Can a chord of a circle ever be longer than the diameter?
The longest chord in a circle is the diameter. So, no.
How big is a 12 mm circle?
A 12 mm circle has a diameter of 12 millimeters, which is slightly less than half an inch (approximately 0.47 inches). The radius, which is half the diameter, is 6 mm. In terms of area, the circle has an area of about 113.1 square millimeters. This size is comparable to the diameter of a large button or a small coin.
