The surface area formula for any sphere is 4(pi)(radius)^2
The radius is half of the diameter.
18.6 / 2 = 9.3
So, plug into the formula and solve.
4(3.14)(9.3)^2 = 1086.3 mm^2
Answer:x=4y
Step-by-step explanation:as you can see x is 4 times more than y.
The value of x in the triangle with angles 80, 40 and (13x - 5) degrees is 5.
<h3>Sum of angle in a triangle</h3>
The sum of angle in a triangle is equals to 180 degrees. Recall a triangle have three sides. Therefore,
80 + 40 + 13x - 5 = 180
120 - 5 + 13x = 180
115 + 13x = 180
subtract 115 from both sides of the equation
115 - 115 + 13x = 180 - 115
13x = 65
divide both sides by 13
13x / 13 = 65 / 13
x = 5
learn more on triangle here: brainly.com/question/15268683
Answer:
2.9
Step-by-step explanation:
The mean is the average of the date It is surprisingly easy to calculate: add up all the data, then divide by how many data points there are.
Becker's data added up is 28. Kayla's data added up is 30. The total amount is 58.
The amount of data points are 20.
58/20 = 2.9
Hope this helps!