Question 264306
Use formula {{{A^2+B^2=C^2}}} where A =4 feet B= top of ladder hieght and C= 18 feet
{{{4^2+B^2=18^2}}}
{{{16+B^2=324}}}
{{{16+B^2-(16)=324-(16)}}}
{{{B^2=308}}}
{{{sqrt(B^2)=sqrt(308)}}}
{{{B=sqrt(308)}}}
{{{B=17.5499287}}}
round to nearest tenth:
{{{B=17.5}}}