Question

Find the area of the triangle

Answer 1

Answer:

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=$\sqrt{72\\}$.

Now you can the area of the second right triangle: ($\sqrt{72\\}$(7))/2=29.7.

Find the length of the first right triangle:

Note that 9 is the hypotenuse; ($\sqrt{72\\}$)^2+b^2=9^2

=72+b^2=81

b=3.

($\sqrt{72}$)(3))/2=12.7

Answer 2

Answer:

381/2

Step-by-step explanation:

A=1/2 b×h

A=1/2 11×7

A=1/2×77

A=381/2