Web13.!The circumference of a circle measures 4m.!Work out the length of the radius of the circle.....cm (2) 14.!Georgina has 1 metre of pink ribbon.!She wants to wrap it around a tree trunk with diameter 32 centimetres.!Will she be able to wrap the ribbon around the tree trunk?!Explain your answer. WebCalculating the area of a circle - example: Calculate the area of a circle with a radius of 6cm, giving the answer correct to 1 decimal place. Write the formula: Area = πr². Substitute the radius (r) into the formula. π × 6². π × 6 × 6 = 113.0973355…. Round to the correct degree of accuracy and include the units.
Area and Circumference of Circles Worksheets KS3 Maths
WebFollow the steps given below to find the diameter of a circle: Step 1: The first step is to identify what is given in the question: radius, area, or circumference. Step 2: Apply the appropriate formula from the above … WebDec 22, 2024 · To calculate the radius of a circle, divide its circumference by 2π; for the circle's diameter, divide the circumference by π. Let's say that the circumference of a given circle is 20 inches. Therefore, its radius is 3.18 in and diameter 6.37 in. hugh oatcake
Circles Revision Practice Questions Pass Functional Skills
WebWhen the radius is given: Circumference of a circle formula = 2πr; When the diameter is given: Circumference of a circle formula = π × D; Where, r = radius of the circle. D = diameter of the circle. π = Pi with the value approximated to … WebThe distance from the centre of a circle to the outside. The radius of the circle is half the diameter of the circle. The plural of radius is radii. Diameter The distance across the circle going through the centre. The diameter is twice the radius. Circumference The distance once around the circle. Arc A part of the circumference. hugh oasis