Perimeter = 2 × π × r
Perimeter = 2 × 3.14 × 9
Perimeter = 56.52
Perimeter = 56.52 ÷ 2
Perimeter = 28.26
The perimeter of a semicircle with a radius of 9mm is 28.26
You have to figure it out. First, the sum of the angles in a polygon = n-2(180) where n is the number of sides. For a pentagon, this is 5-2(180)=540. then divide by 5 for each of 5 large angles in the pentagon, and then divide by 2 for the angle formed by the radius in the right angle. This is 540/5=108 divided by 2 = 54 degrees in the right angle. Now that you know the angle , then use trig to solve the problem...
Answer:
40 songs
Step-by-step explanation:
On average 4 + 6 = 10 / 2 =5 so on average they learn 5 songs
8 months x 5 songs = 40 songs
Im twelve years old
<span>, the answer is (1/5)x^-3, i think</span>
Answer:
Yes you did good job
Step-by-step explanation:
