Question

What is the area of ABC?
(Picture below.)

Answer 1

First find the area of the triangle on the left, what do you get?

Answer 2

a=1/2bh or Pythagorean theorem?

Answer 3

a=i/2bh

Answer 4

sorry, 1/2bh*

Answer 5

a=1/2(7)(12)
a=42

Answer 6

Good, and add the area of the other triangle to that also

Answer 7

a=1/2(9)(7)
a=63/2

Answer 8

@zaynahf Be careful, 12 and 7 are not base and height

Answer 9

True.. then use pythagorean theorem

Answer 10

The height is an altitude, which has to be perpendicular to the base.

Answer 11

In that case I have to use Pythagorean theorem right?

Answer 12

oh ok

Answer 13

a^2+b^2=c^2

Answer 14

what numbers do i plug in?

Answer 15

@mathstudent55 @zaynahf

Answer 16

9^2+12^2=225

Answer 17

is that right? @mathstudent55

Answer 18

\[\text{Area} =\frac{1}{2}\left(\left(\sqrt{9^2-7^2}\right)+\left(\sqrt{12^2-7^2}\right)\right)*7=\frac{7}{2} \left(4 \sqrt{2}+\sqrt{95}\right)=53.9128 \]

Answer 19

Thank you so much!

Answer 20

You're welcome.