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1. The area of a circle is 120 square inches. What is its circumference?

1. The area of a circle is 120 square inches. What is its circumference?

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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1. The area of a circle is 120 square inches. What is its circumference? 2. The sides of a triangle are 80cm, 100cm, and 140cm. determine the radius of the inscribed circle. 3. The sides of a triangle are 80cm, 100cm, and 140cm. determine the radius of the circumscribing circle. 4. The central angle of 136°subtends an arc of 28.5cm. What is the radius of the circle? 5. The angle of a sector is 30 and the radius is 15cm, What is the area of the sector in square centimeters?
Transcribed Image Text:1. The area of a circle is 120 square inches. What is its circumference? 2. The sides of a triangle are 80cm, 100cm, and 140cm. determine the radius of the inscribed circle. 3. The sides of a triangle are 80cm, 100cm, and 140cm. determine the radius of the circumscribing circle. 4. The central angle of 136°subtends an arc of 28.5cm. What is the radius of the circle? 5. The angle of a sector is 30 and the radius is 15cm, What is the area of the sector in square centimeters?
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