Question

HELP !!!!!

Answer 1

The area of a triangle is half the base times the height.
You can get the base and height directly from the picture of the first problem.

Answer 2

For the second triangle, you have the hypotenuse and one leg of a right triangle. Find the other leg using the Pythagorean theorem. Then the legs are the base and height. Just use the area formula.

Answer 3

Would it be a^2+15^2=9^2 @mathstudent55

Answer 4

a^2 + 9^2 = 15^2
The squares of the legs are added. they equal the square of the hypotenuse.

Answer 5

a^2+81= 225 @mathstudent55

Answer 6

yes

Answer 7

a^2 = 144
a = ?