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[DOCX File]CIRCLES: CIRCUMFERENCE AND AREA REVIEW
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These are the other parts of the circle we need to learn about; the diameter and the radius. The diameter is the longest distance from one end of a circle to the other. is the ratio of the circumference of a circle to its diameter. For any circle, if you divide its circumference by its diameter, you get a …
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The points A, B and C lie on a circle, centre O. Angle ACB = 40° and AB = 10 cm. Calculate the radius of the circle. (4) 2. AT and BT are tangents to the circle, centre C. P is a point on the circumference as shown. Angle BAT = 65° Calculate the size of (a) x, (2) (b) y, (2) (c) z. (2) 3. The line PQR is a tangent to a circle with centre O. QS is a diameter of the circle. T is a point on the ...
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We use π to help calculate the circumference of a circle. Since, ; . This is the formula we use to calculate circumference of a circle. Examples: 1. 2. 3. Find the diameter of a circle that has a circumference of 16.4 cm. 4. Find the diameter and radius of a circle that has a circumference of 22.5m. Area of a Parallelogram. Try this: Carla wants to decorate a clay pot for her mother. She ...
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[DOC File]Ferris wheel Math
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Calculate the circumference and area of the following circles and part circles. Use the π button on your scientific calculator and round answers to two decimal places. Circles . Circumference. with working out. Area. with working out. Diameter = 20 cm. What does the radius equal? C = π d. C = π x ___ C = _____ Area= π x r 2 . Area= π x __ 2 . Area= π x ___ Radius = 33km. What does the ...
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[DOCX File]MATH - Yr 8 - W2 - Handouts
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calculate the radius ( r ) of the inflated balloon in cm. r = _C_. 2 π C = circumference π = 3.14. Radius = _____ calculate volume (V) of inflated balloon in cm3 (assume a spherical shape) V = 4 π r 3. 3 Volume = _____ convert V in cubic centimeters ( cm3 ) to Liters (L) Note: 1 cm3 = 1 mL. Volume in liters = _____ convert the measured temperature of the room into Kelvin units. K = °C ...
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[DOC File]Circumference, Radius, and Diameter
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Measure the circumference of the circle. Explain how you found your answer. c) Measure the radius and diameter of the circle. 2. On each circle: a) Mark the centre, a radius, and a diameter. b) Estimate the lengths of the radius and diameter. c) Measure the lengths of the radius and diameter to the nearest millimetre. How do your estimates compare with the measurements? i) ii) iii) Extra ...
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[DOC File]Worksheet 1- functions
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7.G.1: Calculate the radius or diameter, given the circumference or area of a circle. Circle Relationships: The _____ is the distance around a circle. ( C = πd). The_____ is a segment with endpoints at the center and on the circle. The _____ is a segment through the center of a circle with endpoints on the circle; (d = 2r). _____ (π) is the ratio of the circumference to the diameter of any ...
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[DOC File]1 - Teachnet UK
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One circle has a radius of 20 inches, and another circle has a radius of 10 inches. What is the approximate difference between the areas of the 2 circles? 300 in²C. 942 in². 314 in²D. 1256 in². What is the approximate area of the shaded region? 90 cm². 270 cm². 314 cm². 1256 cm² **What is the . perimeter . of the shaded region? 62.8 cmC. 71.4 cm. 60 cmD. 31.4 cm. The circle shown has a ...
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How to Calculate the Radius From the Circumference | Sciencing
The circumference of a circle is 8 ft. Calculate its radius. ... The radius of a circle is 8.4 in. Calculate its circumference. 5a. The circumference of a circle is 5.1 mm. Calculate its diameter. 5b. The radius of a circle is 6.9 in. Calculate its circumference. Title: Circumference, Radius, and Diameter Author: HISD Last modified by: HISD Created Date: 1/26/2012 2:10:00 PM Company: HISD ...
diameter from circumference calculator

Calculate the radius from the circumference