When you have no clue what you’re doing

25y^2 -20iy + 4i^2

Step-by-step explanation:

Theres an acronymn called Foil (first, ouside, inside, last) for expanding an expression like that

For this expression:

= (5y - 2i) (5y - 2i)

= 25y^2 - 10iy - 10iy + 4i^2

= 25y^2 -20iy + 4i^2

This is assuming that "i" is not the imaginary number "i"

area=576

length=√(area)

√(576)=24units

half the length of the square is the triangle base.

24/2=12units

slant height=hypotenuse=20units

height of triangle=√((20)^2-(12)^2)

=16units