Find the diameter of a circle whose circumference is 66cm
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2 thoughts on “Find the diameter of a circle whose circumference is 66cm<br />​”

1. Answer:

   circumference= 2×22/7×r

   GIVEN CIRCUMFERENCE=66

   Therefore,

   66=2×22/7×r

   r= 66×7/2×22

   r= 3×7/2

   r= 21/2

   Diameter= 2×r

   =2×21/2

   = 21 Ans

   Step-by-step explanation:

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2. Let the diameter of a circle be= d m

   Given circumference of the circle is =66 m

   ⟹πd=66

   ⟹ 7/22 ×d=66

   ⟹d= 22

   66×7

   =21 m

   So the diameter is 21 cm

   Step-by-step explanation:

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