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2.8 – Circles
TermPictureFormula Circumference r = radius d = diameter
1. Find the circumference of the circle. Leave answer in terms of.
2. Find the radius.
3. Find the perimeter. Leave answers in terms of pi. 8 P = CircleTwo segments +
4. A bike wheel has a diameter of 16 inches. If the wheel revolves 7 times, how far does the bike move? 16in x 7 times
4. Find the area of the circle.
5. Find the area of the circle. 77
6. Find the area of the shaded figure.
8. You want to design a new backyard for your family. The design is a rectangle with a semicircle on one end. a. Find the area of the backyard. Show all work.
b. The backyard needs to be covered with grass. If the grass costs $3 per square foot, how much will it cost? x $3
Find the area of a rectangle whose dimensions are.
If the diameter of a circle is 6 in, then what is its radius?
Using Formulas in Geometry
Circles 9.3 Page 532 DiameterIs a segment that passes through the center of the circle and has endpoints on the circle. Segment AC is the diameter. D =
Perimeter Rectangles, Squares, and Triangles Perimeter Measures the distance around the edge of any flat object. To find the perimeter of any figure,
Area and Circumference of Circles
Circumference and Arc Lengths Lesson The circumference of a circle is its perimeter. C = πd Leave answer in terms of π unless asked to approximate.
The Circumference of a Circle diameter(d) Circumference (C) How many times does the diameter fit around the circumference? Choose your number. 11½22½33½4.
Circles: Area and Circumference. Definitions Circumference: Distance around the outside of a circle Area: How many squares it takes to cover a circle.
3.4 Area and Circumference 1 Circle A circle is a plane figure that consists of all points that lie the same distance from a fixed point. The fixed point.
Lesson 7.2 Objective: To find area and circumference of circles.
Chapter 9 Geometry © 2008 Pearson Addison-Wesley. All rights reserved.
Target Apply formulas for perimeter, area, and circumference.
© 2008 Pearson Addison-Wesley. All rights reserved Chapter 1 Section 9-3 Perimeter, Area, and Circumference.
Section 9-4 Perimeter, Area, and Circumference.
Section Using Formulas in Geometry Holt McDougal Geometry
Circumference Arc Radius Diameter Chord Tangent Segment Sector
Holt CA Course 1 9-4Circumference and Area MG2.1 Use formulas routinely for finding the perimeter and area of basic two- dimensional figures and the surface.
Objective Apply formulas for perimeter, area, and circumference.
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