0
radius of a circle = 4 inches
Circumference of a circle = 2
π radius
radius = circumfere
n
ce/ 2
π
= 8
π/2
π
= 8/2
= 4
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
If the radius of a circle is 4 then what is the circumference?
8pi, the circumference is 2pi multiply by radius
What is the circumference of a circle with a radius of 4 inches?
The formula for finding the circumference is the diameter times pi because the radius is half of the diameter, the diameter of this circle would be 8 8 times pi equals approximately 25.1327 Or you could leave it in terms of pi and say 8pi (using the symbol)
What is the circumference of circle inside a square with a perimeter of 32 inches?
The is not stated that the circle inside the square was the greatest possible circle, so all one can say is 8pi at most.
If the radius is 4cm what is he circumference?
Circumference of a circle is C=2pir C=2pi(4) C=8pi C=25.12 cm Where pi is the ratio of the circumference to the diameter of any circle, approximately 3.14. There is usually a button for pi on scientific/graphing calculators.
What is the circumfernce of a circle with a radis of 4?
The circumference of a circle is found using the formula pi * 2r = 3.14 * 8. The circumference of the circle is 8pi or 25.12 units.
What happens to the area of a circle if you double the original radius?
the area doubles. for example: the radius is 2. so the area is 4pi. then double the original radius of 2 to 4 and the area is 8pi. 8pi is double 4pi.
If the area of a circle is 8pi what is the length of its diameter?
If the area of a circle is 8pi, its diameter is: 5.657 units.
What is the area of a circle whose cicumfrence is 8 pie?
If circ is 8pi the radius must be 4 so area is 16pi
What is the cicumference of a circle with a radius of 4 cm?
The formula for the circumference of a circle is 2(pi)(r). From your example, r=4 cm So the answer would be 2(pi)(4 cm), or 8pi cm (this is a little more than 24 cm, since pi=3.14).
How far does the tip of the minute hand of a clock move in 35 minutes if the hand is 4 inches long?
It moves 35/60 of a circle. Circle is circumference 2 pi r. r=4 so that's 8pi So, we have 8x35/60 pi = 280/60 pi = 14/3 pi, or approximately 14.66 inches
Find the surface area of a cylinder with a radius of 4 inches and a height of 5 inches?
The surface area of the top of the cylinder is pi(r)2. In this case r = 4 inches, so the surface area of the top is 16pi. The surface area of the bottom is also 16pi. The surface area remaining is equal to the height of the cylinder (in this case 5 inches) multiplied by the circumference of the top (in this case 2 * pi * 4 = 8pi). So the surface area of the remaining side is 5 * 8pi = 40pi.40pi + 16pi + 16pi = 72pi cubic inches. That is approximately 226.19 in3.
What is the circumference of a circle with diameter 8?
Use the formula [2*pi*r], or [pi*d] to find circumference. Therefore, the circumference will be 8pi, which is roughly 25.13
