Question 151692
You are correct. Remember, a negative height does not make sense. So the only answer is h=10


So this would make the base {{{b=10+4=14}}}



Check:



{{{A=(1/2)b*h}}} Start with the given equation.



{{{A=(1/2)(14)(10)}}} Plug in {{{h=10}}} and {{{b=14}}}.



{{{A=(140/2)}}} Multiply



{{{A=70}}} Reduce



Since the area is 70 square units, this verifies the answer.