Answer:
15
Step-by-step explanation:
Answer:
The answer is 753.01 m².
Step-by-step explanation:
Given that the formula of sector is θ/360×π×r² where r represents radius of circle. Then, you have to substitute the values into the formula :

Let θ = 255°
Let π = 3.14,
Let r = 18.4m,


Answer is 40. A triangle equals 180 so all you do is subtract 65 and 75 from 180 to get your answer.