Fifteen circles fit into a rectangle. The radius of each circle is 3cm. What is the are a of the rectangle? A.540cm2 B.270cm2 C.135cm2 D.288cm2 E.144cm2 答案 A(3×6)×(3×10)=18×30=540.相关推荐 1Fifteen circles fit into a rectangle. The radius of each circle is 3cm....
There is an electric toy formed by a rectangles(8.28cm×5.14cm)and a circle of radius 3cm(with a baby face on it),they connect at Ponint AAnd E(as in the construction).If the circle rolls from Point A along the rectangular inner wall(no slip).Finally returns to the original position...
娃娃与A上下相反；C到D转了（8.28-1-1）÷（2×3.14）=1（圈），娃娃脸同C；D到A转了（5.14-1-1）÷（2×3.14）=0.5（圈），娃娃脸回到A位置；小圆盘共自转了1+0.5+1+0.5=3（圈）；
(201922)Each of the circles in this diagram has a radius of 3cm and an are a of approximately 28.26cm^2. The circles fit together, touching the edges of the square. What is the approximate are a of the shaded region?( )∴1/2∴ A: between 3cm^2 and 5cm^2 B: between 5cm^2 and...
Thereisanelectrictoyformedbyarectangles(8.28cm×5.14cm)andacircleofradius3cm(withababyfaceonit),theyconnectatPonintA AndE(asintheconstruction).IfthecirclerollsfromPointAalongtherectangularinnerwall(noslip).Finallyreturnstotheoriginalposition.Ⅰ.PleasesketchthecirclewithababyfaceatPositionB,C,Drespectively.Ⅱ...
Step by step video & image solution for A circle of radius 5 cm is drawn and another circle of 3 cm radius is cut out of this circle. What is the radius of a circle which has the same area as the area of the bigger circle excluding the cut one? (a) 2 cm (b) 3 cm (c) 4...
<p>To find the length of OS in the given circle, we can follow these steps:</p><p><strong>Step 1: Understand the Geometry</strong> We have a circle with radius \( r = 10 \) cm. Chords PQ and PR each have a length of 12 cm. The line segment PO intersects
What is the instantaneous rate of change of the area of a circle when the radius is 3cm?Instantaneous Rate of Change:The instantaneous rate of change of a function is the rate at which the dependent variable is changing with respect to the independent variable at ...
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:...
Circles Shape and Space. The value of π For any circle the circumference is always just over three times bigger than the radius. The exact number is called. 2cm 1.5cm 3cm 12.57cm 6.28cm 9.42cm 18.85cm 12.57cm cm cm cm 2 A. B. C. D. i. ii. iii. iv ...