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Because the radius is the distance from one side to the center, and the diameter is the direct distance from one side to the other through the center.
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∙ 13y ago
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What happens to the area of a circle if the diameter is doubled?
If you double the diameter of a circle, the area will quadruple (be 4x greater).The area of the circle increases exponentially with the diameter, or more precisely with the radius, which is 1/2 the diameter. A = (pi)r2Doubling the diameter of a circle will quadruple the area (22 =4).This is easily seen in pizzas, where the dough needed for a 16-inch pizza can be used instead to make 4 pizzas with a diameter of 8 inches.---The equation to find the area of a circle is a=(pi)r2. If the diameter is doubled, then the radius is also doubled, because the radius is just half the diameter.The area of a circle once its radius (and therefore diameter) has been doubled can be expressed as follows: a'=(pi)(2r)2, which simplifies to a'=(pi)(4r2).To find the proportion of a' and a, we just divide the second by the first. This gets us[(pi)(4r2)]/[(pi)(r2)]=4
How do the the radius and diameter of a circle compare?
The diameter of a circle is twice its radius
If the radius of a circle is r what is the diameter of the circle?
The radius of a circle is half the diameter so if the radius of a circle is r, then the diameter is 2r.
What is the diameter of a circle or a radius of in?
The diameter of a circle is twice its radius
When the diameter of a circle is 85.4 What is the radius of the circle?
The radius of a circle is always half of the diameter. If the diameter is 85.4, the radius is 42.7.
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.
What happens to the area of a circle if the diameter is doubled?
If you double the diameter of a circle, the area will quadruple (be 4x greater).The area of the circle increases exponentially with the diameter, or more precisely with the radius, which is 1/2 the diameter. A = (pi)r2Doubling the diameter of a circle will quadruple the area (22 =4).This is easily seen in pizzas, where the dough needed for a 16-inch pizza can be used instead to make 4 pizzas with a diameter of 8 inches.---The equation to find the area of a circle is a=(pi)r2. If the diameter is doubled, then the radius is also doubled, because the radius is just half the diameter.The area of a circle once its radius (and therefore diameter) has been doubled can be expressed as follows: a'=(pi)(2r)2, which simplifies to a'=(pi)(4r2).To find the proportion of a' and a, we just divide the second by the first. This gets us[(pi)(4r2)]/[(pi)(r2)]=4
What happens to the diameter if the circumference is doubled?
The diameter of a circle is doubled if the circumference is doubled.
How do the the radius and diameter of a circle compare?
The diameter of a circle is twice its radius
If the radius of a circle is r what is the diameter of the circle?
The radius of a circle is half the diameter so if the radius of a circle is r, then the diameter is 2r.
What is the diameter of a circle or a radius of in?
The diameter of a circle is twice its radius
What is the radius of a circle if the diameter is 14in?
The radius of a circle is half of the diameter, so the radius of a circle with a diameter of 14in is 7in.
When the diameter of a circle is 85.4 What is the radius of the circle?
The radius of a circle is always half of the diameter. If the diameter is 85.4, the radius is 42.7.
What is the radius of a circle with a 6inches diameter?
The radius of a circle is half the diameter, so the radius of a 6 inch diameter circle is 3 in.
How does the radius compared to the diameter of a circle?
The radius is half of the diameter of a circle
What is the radius of a circle if its diameter is cm?
The radius of a circle is half of its diameter
If the radius of a circle is 16.3circumference.then what is the diameter?
The diameter of a circle is twice its radius
