1. Find the circumference of the circle with diameter 7.5 cm in metres. (Take π = 3.14)
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Answer- 0.471 meters
Step by step explanation :-
Diameter= 2r
r= Diameter/2
r= 7.5/2
circumference of a circle= 2πr
= 2×3.14×7.5
= 47.1 cm
100 cm= 1 meter
47.1 cm= 47.1/100
= 0.471 meters
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