can you explain the highlighted

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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can you explain the highlighted 

Given data,
0=5×106 S/m
l=4m
Figure is given as,
I cm
Step 2
Area of square is given by,
As-3cm x3 cm=9 cm2=9x10-4 m2
Area of circle is given by,
Ac-π4d2=3.144x12=0.785 cm2-0.785×10-4 m2
Step 3
Area of shaded area is given by,
Ashaded-As-Ac-9-0.785×10-4 -8.215×10-4 m2
Resistance is given by,
R=IGA=45×106x8.215×10-4-9.74×10-42=974×10-602-974 μ
3 cm
3 cn
Transcribed Image Text:Given data, 0=5×106 S/m l=4m Figure is given as, I cm Step 2 Area of square is given by, As-3cm x3 cm=9 cm2=9x10-4 m2 Area of circle is given by, Ac-π4d2=3.144x12=0.785 cm2-0.785×10-4 m2 Step 3 Area of shaded area is given by, Ashaded-As-Ac-9-0.785×10-4 -8.215×10-4 m2 Resistance is given by, R=IGA=45×106x8.215×10-4-9.74×10-42=974×10-602-974 μ 3 cm 3 cn
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