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To show traffic symbols of 5 circular discs are prepared by cutting and iron sheet Radius of all discs is 21 cm.Find out the meaning of all these symbols with the help of your teacher and find out circumference and area of discs. |
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Answer» The first symbol represents the restriction on foot movement and second symbol represents the restriction of smoking. Third symbol represents the restriction of truck. Fourth symbol represents the restriction on horn. Fifth symbol represents the maximum speed limit of 50 km/hour. Radius of circle = 21 cm Circumference of the circle = 2πr ( where π = 22/7) = 2 x 22/7 x 21 = 2 x 22 x 3 = 44 x 3 = 132 cm. Area of the circle = πr2 = 22/7 x 21 x 21 = 22 x 3 x 21 = 1386 cm2. |
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