Answer:
let’s find the area of the circle first.
The formula to find the area of the circle is 3.14 x r^2
3.14 x 0.5^2 = 0.785 cm^2
Lets find the area of the triangle.
the formula to find the area of the triangle is 1/2 x base x height
The height is found if you subtract the square of 5 from the square of 4.
5^2 - 4^2 = 9
the square root of 9 is 3.
1/2 x 8 x 3 = 12 cm^2
lets find the area of the rectangle
length x width
8 x 4.5 = 36 cm^2
then subtract the area of the circle from the area of the rectangle and then add the area of the triangle
36 - 0.785 + 12 = 47.215 (round it off to 47)