Radius (r): or Diameter (d): or Area (A): Unit of Lenght: Calculate Circumference Result: The circumference of a circle with radius 6 is 37.7(*) Formulas: r = 6 d = 12 C = 37.7 C = 2·π·r C = π·d C = √4·π·A π = 3.1415 A = area of the...
In terms of radius, the diameter is equal to two times the length of the radius of the circle. So $$D = 2R $$ Answer and Explanation:1 Given that the diameter of a circle is {eq}6 \rm ~cm. {/eq} $$D = 6 \rm ~cm $$ ...
The circumference of a circle with radius π is ( ).A.πB.2πC.π2D.2π2
Circumference of a Circle Formula The Circumference (or) perimeter of circle = 2πR where, R is the radius of the circle π is the mathematical constant with an approximate (up to two decimal points) value of 3.14 Again, Pi (π) is a special mathematical constant; it is the ratio of ...
A circle has a radius of 5 cm. What's the circumference of the circle? A. 10π cm B. 15π cm C. 20π cm D. 25π cm 相关知识点: 试题来源: 解析 C。本题考查圆的周长计算。圆的周长等于 2πr,半径为 5cm,所以周长是 2×π×5 = 10πcm。A 选项少乘了 2;B 选项计算错误;D ...
6. (a) Calculate the circumference of a circle with a radius of 72 cm, giving your answer to an appropriate degree of accuracy.3](b) Calculate the are a of a semicircle with a diameter of 44-8 cm.3(c)8-2cm→7.6cm12.8cm Diagram not drawn to scale Calculate the are a of the tra...
The circle has a radius of 4 cm. What's the circumference of the circle? A. 8π cm B. 16π cm C. 12π cm D. 20π cm 相关知识点: 试题来源: 解析 B。本题考查圆的周长计算。圆的周长 = 2×半径×π,即 2×4×π = 8π(厘米),所以答案是 B,A 选项 8π cm 计算错误,C 选项 ...
Circumference length formula in terms of radius C = 2·π·r Circumference length formula in terms of diameter C = π·d Circumference length formula in terms of area C = √4·π·A Questions this calculator can answer: How to find the perimeter of a circle with a radius of 46...
A circle has a radius of 5 cm. What is the circumference of the circle? A. 10π cm B. 15π cm C. 20π cm D. 25π cm 相关知识点: 试题来源: 解析 C。本题考查圆的周长计算。圆的周长等于 2πr,半径是 5 厘米,周长就是 2×π×5=10π 厘米。选项 A10π 厘米错误,选项 B15π ...
7. (a) A circle has a radius of 8mm. Workout the circumference of the circle. Roundyour answer to the nearest millimetre.mm(1 mark)(b)A different circle has a diameter of 3cm.Work out the circumference of this circle.Round your answer to the nearest 0.1cm.cm(1 mark) 相关知识点:...