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ICSE Class 9 Answered

Find the area and perimeter of a circle when it's radius 3.5cm diameter 14 cm
Asked by anshikasingh5509 | 03 Jan, 2019, 06:56: PM
answered-by-expert Expert Answer
Area of a circle whose radius = 3.5 cm
Area of circle = begin mathsize 16px style πr squared equals 22 over 7 cross times 3.5 cross times 3.5 equals 38.5 space cm squared end style
Perimeter of a circle is the circumference of the circle whose diameter = d = 2r = 14 cm
 
Perimeter = begin mathsize 16px style 2 πr equals 14 space cross times space 22 over 7 equals space 44 space cm end style
Answered by Yasmeen Khan | 04 Jan, 2019, 03:41: PM

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