PLEASE HELP!! asap, thank you if you do.
you do not have to do all of them, please show work btw.

5. 36 square inches

2. Answer is B.

3. 189 cm^2

Step-by-step explanation:

5. 6 + 6 + 6 + 8 + 10 = 36

3. 51 + 102 + 36 = 189

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!