Question Number 167126 by MathsFan last updated on 07/Mar/22 | ||
$$ \\ $$ Assuming one of the WiFi towers of a building is 20km high, and has a perpendicular distance of 15km to a straight road. Calculate the distance of the road which receives a good WiFi signal if it has a limited range of 45km (Calculate to four significant figures)\\n | ||
Commented bymr W last updated on 07/Mar/22 | ||
$${i}'{d}\:{like}\:{to}\:{know}\:{in}\:{which}\:{country}\:{this} \\ $$ $$\mathrm{20}{km}\:{high}\:{WiFi}\:{tower}\:{stands}... \\ $$ | ||
Commented byMathsFan last updated on 07/Mar/22 | ||
$${you}'{ve}\:{made}\:{smile}\:{Sir}\:\left(\:^{\bullet} \smile^{\bullet} \right) \\ $$ | ||
Commented bymr W last updated on 07/Mar/22 | ||
$$\mathrm{20}^{\mathrm{2}} +\mathrm{15}^{\mathrm{2}} +\left(\frac{{x}}{\mathrm{2}}\right)^{\mathrm{2}} =\mathrm{45}^{\mathrm{2}} \\ $$ $${x}=\mathrm{2}\sqrt{\mathrm{45}^{\mathrm{2}} −\mathrm{20}^{\mathrm{2}} −\mathrm{15}^{\mathrm{2}} }=\mathrm{74}.\mathrm{83}\:{km} \\ $$ | ||
Commented byTheSupreme last updated on 07/Mar/22 | ||
$${with}\:\mathrm{45}{km}\:{of}\:{range}... \\ $$ | ||
Commented byMathsFan last updated on 07/Mar/22 | ||
$${thank}\:{you}\:{sir} \\ $$ | ||
Commented bymr W last updated on 07/Mar/22 | ||
$${x}={length}\:{of}\:{road}\:{with}\:{good}\:{reception} \\ $$ $${of}\:\:{WiFi}\:{signal} \\ $$ | ||
Commented bymr W last updated on 07/Mar/22 | ||
Commented byMathsFan last updated on 08/Mar/22 | ||
$${i}\:{appreciate}\:{sir} \\ $$ | ||
Commented byotchereabdullai@gmail.com last updated on 21/Mar/22 | ||
$$\mathrm{most}\:\mathrm{powerful}\:\mathrm{prof}! \\ $$ | ||