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![Geometry Worksheets for School and Home](https://static.wixstatic.com/media/49609e_4375edf449221b9ec0654010a69c6864.png/v1/fill/w_80,h_80,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/49609e_4375edf449221b9ec0654010a69c6864.png)
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Geometry for School and Home
![Geometry worksheet in which students measure circumferences and diameters of circles to calculate the ratios of circumference to diameter in circles.](https://static.wixstatic.com/media/49609e_b677bd57a57541b7aea3cd749593e745.jpg/v1/fill/w_404,h_528,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/49609e_b677bd57a57541b7aea3cd749593e745.jpg)
![Geometry worksheet in which students use calculations of ratios of circumferences to diameters in circles to calculate an approximation of pi and round the value of pi to required numbers of decimal places.](https://static.wixstatic.com/media/49609e_f3a7b4ecb24c45bfa957dd099061602d.jpg/v1/fill/w_404,h_562,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/49609e_f3a7b4ecb24c45bfa957dd099061602d.jpg)
Activity 10A
Pi
Objectives
Use measurement to determine the relationship between circumferences and diameters of circles.
Calculate an approximate value of pi.
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About Geometry Worksheet Activity 10A:
Activity 10A is an introduction to pi ( ) the ratio of the circumference to the diameter of a circle.
Prerequisite Skills: Measure lengths to the nearest .1 cm.(Assignment 1.11).
Definitions: The circumference of a circle is the length ("distance around") of a circle.
Pi is the ratio of the circumference to the diameter of any circle.
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