Figure B is a bounded semicircle with radius 6. What is the ratio of the perimeter of A to the perimeter of B?( )A.1:2B.2:1C.2π:π+2D.π+2:2π 答案 C相关推荐 1Figure A is a circle with radius 6. Figure B is a bounded semicircle with radius 6. What is the ratio of ...
The area of a circle with a radius of 3 cm is ___ square centimeters. A. 3π B. 6π C. 9π D. 12π 相关知识点: 试题来源: 解析 C。本题考查圆的面积公式。半径为 3 cm 的圆的面积是 A = πr² = π×3² = 9π 平方厘米。反馈 收藏 ...
结果一 题目 The diagram shows a circle with centre $O$ and radius $5$ cm. The point $P$ lies on the circle, $PT$ is a tangent to the circle and $PT=12$ cm. The line $OT$ cuts the circle at the point $Q$.Find the area of the shaded region. 答案 Shaded area = $15.3$ cm...
The diagram shows a circle with centre O and radius 6cm.The chord PO divides the circle into a minor segment R; of areaA1 cm2 and a major segment R2 of area A2cm2. The chord POsubtends an angle θ radians at O.ShowthatA_1=18(θ-sinθ).PR6cm ...
As shown in the following figure, the radius of a circle is 1 cm, and it circles a round around the right trapezoid. What’s the total distance the centre O goes? (AD=5cm,BC=8cm,AB=6cm,CD=8cm) 相关知识点: 试题来源: 解析 [解析]圆心O走的路程就是梯形的四条边和一个半径是1厘...
How to find the perimeter of a circle with a radius of 10.2 cm? A circle has a diameter of 20.4 cm. What is its circumference? If a circle has a area of 326.9 square centimeters. What is its perimeter? Disclaimer While every effort is made to ensure the accuracy of the...
Radius: or Diameter or Circumference: Unit: Calculate Area Result: The area of a circle with radius 65 is 13270 Formulae: r = 65 d = 130 C = 408 A = πr2 = π(d2)2 A = C24π π = 3.1415 A = area C = circumference or perimeter r = radius, d = diameter Solut...
Gently press the straw into the adhesive putty so that the bottom of the straw is sealed by the putty..Arrange the apparatus as shown in Fig. 2.2 and Fig. 2.3 with the straw above the centre of the circle drawn on the paper.TOP VIEW paper-e adhesive putty circle on paper-straw-Pe...
百度试题 结果1 题目(2016 Math League, Grade 6, Question #25) The circumference of a circle with radius π is( ). A.π B.2π C.π2 D.2π2 相关知识点: 试题来源: 解析 D 反馈 收藏
Can the area and radius of a circle be equal? Yes, take a circle with radius r = 1/π. Then its area is equal to πr2 = π(1/π)2 = 1/π, so it has the same value as the radius. Remember, however, that the units differ! The radius and area have, respectively, length an...