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rmula for the area of an Sketchpad

`^(®)`

activity site to answer the question

`R=PR`

true?" Explain. 55. Diana says she knows the formula for the area of a triangle is one half of the base times the height. She wonders if it makes a difference which side she uses for the base. For example, in the figure below, she knows

`AD`

is 5.5 and wonders if she could use 10 as the base. How would you respond?