Answer:

Explanation:
Given a material with temperature coefficient of resistance <em>c</em>, the equation that relates the resistance
at temperature
and the resistance
at temperature
is

We want to double our resistance, so
, thus having:

For this T must be:


which for our values means (with
, remember to write temperature in S.I., and that for silver
):

Answer:
15.13m
Explanation:
change 15m to cm
1m=100cm
15m times 100=1500cm
add 1500+13 = 1513cm
in metres it will be 15.13m