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A piece of wire is bent in the shape of an equilateral triangle of each side6.6cm . It is re-bent to form a circular ring . What is the diameter of the ring |
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Answer»
A piece of WIRE is BENT in the SHAPE of an equilateral triangle of each side 6.6 cm. It is re-bent to form a circular ring. What is the diameter of the ring? Get beautiful home interiors in just 45 days. Each side= 6.6 cm. No. Of sides=3 Therefore, perimeter of the triangle=6.6×3=19.8cm Therefore length of the wire=19.8cm When the wire is bent to a circular ring, perimeter i.e, circumference of the circle will be still 19.8cm. Therefore, 2πr=19.8 => 2r=19.8/π Since diameter is equal to twice the RADIUS of the circle,we can SAY that Diameter=19.6/π = 19.8×7/22 =6.3cm Hence the diameter of the circle is 6.3cm
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