Answer:
do it yourself
Step-by-step explanation:
Hope this helps! This is how you do it.
Not quite sure about #1 but x=58°
Hey there!

Formula for the area of a triangle is (1/2)bh.
Base of this triangle is 5, height is 4.
Image attached.
Plug values into the formula:
A = (1/2)(5)(4)
Simplify.
A = (1/2)(20)
A = 10
Area of the triangle is 10 units².
Hope this helps!