Help Quick Please. Will give brainliest.

72 units²

Step-by-step explanation:

The area (A) of the triangle is calculated as

A = bh ( b is the base and h the perpendicular height )

Here b = ST = a = 12 and h = RS

To calculate RS use the tangent ratio in the right triangle and the exact value

tan60° = , thus

tan60° = = = = ( multiply both sides by 12 )

RS = 12

Thus

A = × 12 × 12 = 6 × 12 = 72 units²

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

answer: 43/157

this is the answer and if you try to prove me wrong your a meanie