55 cubic centimetres of silver is drawn into a wire 1 mm in diameter. the length of the wire in metres will be:  Options
A) 84 m B) 88 m C) 120 m D) 70 m E) none
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) ** 2</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) * pi</gadget>
<output>pi/4 = around 0.785398</output>

<gadget id="calculator">55 / (pi/4)</gadget>
<output>220/pi = around 70.028175</output>

<result>D</result>
55 cubic centimetres of silver is drawn into a wire 1 mm in diameter. the length of the wire in metres will be:
divide(55, multiply(power(divide(1, const_2), const_2), const_pi))
"sol . let the length of the wire b h . radius = 1 / 2 mm = 1 / 20 cm . then , 22 / 7 * 1 / 20 * 1 / 20 * h = 55 ⇔ = [ 55 * 20 * 20 * 7 / 22 ] = 7000 cm = 70 m . answer d"