Answer:
I'm pretty sure the answers are A and C but B could possibly be an answer too
hope this helped
<u>Answer:</u>

<u>given:</u>
- adjacent side: 10
- hypotenuse side: 20
<u>using cosine rule:</u>




Answer:
47.3
Step-by-step explanation:
as shown above ,this question can be solved using trigonometry and hence we get the perimeter to be 47.3
Answer:
31.86
Step-by-step explanation:
add them all up and then divide by how many numbers there are to get the mean