Please help! I need help with these three problems. thank you!
1 answer:
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For this case we have that by definition, the perimeter of a circle is given by:
Where:
r: It is the radius of the circle.
According to the figure, it is observed that the radius of the circle is 2. Then:
Let's remember that we have a quarter circle:
We round and we have that the correct option is
Answer:
Option A
The attached figure is the image that completes the question
Answer:
c = 60.65 cm
Step-by-step explanation:
Given that,
The two sides of a triangle are 33 cm and 37 cm.
The angle between these two sides is 120°.
We need to find the length of the third side of the triangle. Let c is the third side. Using cosine rule,
a = 33 cm, b = 37 cm and C is 120°
So,
So, the length of the third side of the triangle is 60.65 cm.