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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

Draw concentric circles given that radius of inner circle is 4.5 cm and width of circular ring is 2.5 cm - Mathematics

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Question

Draw concentric circles given that radius of inner circle is 4.5 cm and width of circular ring is 2.5 cm

Diagram

Solution

Give radius of inner circle = 4.5 cm

Width of circular ring is 2.5 cm

Radius of outer circle = 4.5 + 2.5 = 7 cm


Step 1: Drawn a rough diagram and marked the given measurements

Step 2: Taken any point O and marked it as the center.

Step 3: With O as center and drawn a circle of radius OA = 4.5 cm.

Step 4: With O as center drawn a circle of radius OB = 4.5 + 2.5 = 7 cm.

Thus the concentric circles C1 and C2 are drawn.

Width of the circular ring = OB – OA

= 7 – 4.5

= 2.5 cm

shaalaa.com
Construction of Concentric Circles
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Chapter 4: Geometry - Exercise 4.3 [Page 91]

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Samacheer Kalvi Mathematics - Term 3 [English] Class 7 TN Board
Chapter 4 Geometry
Exercise 4.3 | Q 9 | Page 91
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