Answer and Step-by-step explanation:
First work out the area of the semi circle so, To do this we find the area a circle and half it.
We know that:
→ The radius of the semi circle is 4.
→ To find the area of a circle is it radius² x π
→ Therefore the area of the semi circle is 4 ² x π
→ Then divide this by 2.
→ Then you should get 16 π which equals 50.26548246 cm ².
Now, to find the area of the triangle:
→ The area of a triangle is base x height divided by 2.
→ Therefore you should get 9 x 8 divided by 2 which you should get to 36 cm ².
→ Then add the two together to get:
86. 26548246.
→ Then round to the newest hundredth to get to the final answer of : 86.27cm².
