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Dec 23, 2017 · Formula for the circumference of a circle is. Circumference = 2πr where r is the radius of the circle. Given r = 8”. ∴ Circumference = 2 ⋅ π⋅ 8 = 16 ⋅ π = 50.2655”. Circumference of the circle = 50.2655” Formula for the circumference of a circle is Circumference = 2 pi r where r is the radius of the circle. Given r = 8” :.
May 13, 2018 · the circumference C and diameter d. are related by the equation. C = πd. so to find the diameter we simply divide the circumference by π. d = C π. Answer link.
Jun 3, 2018 · Hope this helps! 3pi inches or about 9.42 inches (rounded to nearest hundredth's place) The formula for the circumference of a circle is 2pir where r is the radius, or pid where d is the diameter. In this problem, we are given the diameter, so we can use the pid formula to find the circumference. Plug in 3 for the diameter: pi (3) = 3pi inches ...
May 11, 2018 · π = 22 7 or 3.142. r = radius. Hence you can find the radius of the circle from the circumference.. C = 2πr. Divide both sides by 2π. C 2π = 2πr 2π. C 2π = 2πr 2π. C 2π = r. r = C 2π.
Dec 31, 2016 · Answer link. 8pi The area of a circle is pir^2 where r is the radius. So we are given: pir^2 = 16pi Dividing both sides by pi we find r^2=16=4^2 and hence r=4. Then the circumference of a circle is 2pir so in our case: 2pir = 2*pi*4 = 8pi color (white) () Footnote Why is the circumference and area of a circle given by these formulas?
Apr 21, 2018 · Explanation: the diameter is 4 cm which means the radius is 2 cm. Diameter divided by two will give you the radius. The formulae for circumference is 2 π⋅ r. So the circumference would be 4 π. Answer link. 4 \pi cm pi is defined as the ratio of a circle's circumference C to its diameter d. So C = \pi d = 4 pi cm.
Nov 26, 2016 · Circumference of circle with radius 3 is 18.85 Circumference of circle with radius r is 2pir, where pi=3.1416. As such, circumference of circle with radius 3 is 2xx3.1416xx3 or 6xx3.1416=18.8496~=18.85 ,
Jun 12, 2018 · This is how you find the circumference of any circle. #C=2xx pi xx "diameter"/2# So. #C= 2 xx 3.14 xx "6 ...
Sep 20, 2015 · C = π ⋅ 12in = 38in. To find the area of a circle, use the formula A = π ⋅ r2, where r is the radius, which half of the diameter. r = 1 2 d = 1 2 ⋅ 12in = 6in. A = π⋅ (6in)2 =113in2. Answer link. The circumference of a circle is S=2pir where r =radius The area of cirlce is A=pir^2 The diameter is twice the radius d=2r=>r=6 So the ...
Jan 6, 2016 · =56.52cm The formula for the circumference of a circle is =2 pi r The radius =9 cm circumference =2 pi r =2 xx 3.14 xx 9 =6.28 xx 9 =56.52cm
