Answer:
20 degrees
Step-by-step explanation:
The sum of inner angles of a triangle is 180 degrees
120 + 40 + x = 180
160 + x = 180
x = 20
To calculate the are of the sides of a cylinder, you take the circumference of the base, or circle, and multiply it times the height. To calculate the circumference of a circle we use the formula 2*pi*r, or 15pi. We multiply this times 20 to get 300pi cm. If you are using 3.14 for pi, this is 942, or if you are using actual pi, around 942.4777.
Hi!
<h3>So we need to subtract 3/5 from a whole fraction. (5/5)</h3>
<h2>The answer is 2/5</h2>
Hope this helps! :)
-Peredhel
What do you mean ? Parent and child ?
