Find the area of the triangle Please help me - I don't get how to do this.

Please show your work - I really need to understand this

Step-by-step explanation:

1. Pythagorean theorem: a^2+b^2=c^2

Note that the hypotenuse is 11 (for the second right triangle).

Find the length of the dotted line by doing 7^2+b^2=11^2

49+b^2=121, b=.

Now you can the area of the second right triangle: ((7))/2=29.7.

Find the length of the first right triangle:

Note that 9 is the hypotenuse; ()^2+b^2=9^2

=72+b^2=81

b=3.

()(3))/2=12.7

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step-by-step explanation: