



 
Hi Hailey, You know that the area $A$ of a triangle is given by \[A = \frac12 \times b \times h\] where $b$ is the length of the base and $h$ is the height. Fill in the values you know, $A = 77$ square feet and $b = 11$ feet. This results in an equation where the only unknown is the height $h.$ Solve this equation for $h.$ If you have difficulty solving for $h$ have a look at these three somewhat similar examples. 1, 2 and 3. Once you have determined the value of $h$ you can check your answer. Us the formula \[A = \frac12 \times b \times h\] with $b = 11$ feet and $h$ the value you obtained to see if you get an area of $77$ square feet. Penny  


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