Answer:
Step-by-step explanation:
To find the area of a semicircle the formula is

The square

(rectangle)
(triangle)
slope = - 
calculate the slope m using the gradient formula
m= (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (- 3, 6)
m =
=
= - 
Step-by-step explanation:
ur answer is there in image