Answer:
21 in
Step-by-step explanation:
In order to find the triangle's area you need two measurements. It gives you 7in as the width and the length will be 6. It is 6 because a rectangle has the same length and the same width on both sides respectively.
Then you use the formula 1/2(base times height) which is the same as length times width.
1/2(7x6)=21
