Answer:
The surface area of the structure is 
Step-by-step explanation:
we know that
The surface area of a sphere is equal to

In this problem we have
-----The radius is half the diameter
substitute


Answer:
-74
Step-by-step explanation:
First you use term 0, which is 6 because term 1 is 4. The slope is -2x so after 40 terms it would be -74.
2x^2 - 5x + 1 = 3
Subtract 3 from both sides
2x^2 - 5x + 1 - 3 = 3 - 3
2x^2 - 5x - 2 = 0
Use quadratic formula with A = 2, B = - 5, C = - 2
x = - b +- sqrt b^2 - 4ac/2a
x = - ( - 5) +- sqrt (- 5)^2 - 4(2)( - 2)/(2)(2)
x = 5 +- sqrt 41/4
x = 5/4 + 1/4sqrt 41 or x = 5/4 + - 1/4 sqrt 41
Answer: x = 5/4 + 1/4 sqrt 41
x = 5/4 + - 1/4 sqrt 41
Hope that helps!!!!! (D)
Answer:
<h2><u>
B. Circle</u></h2>
Step-by-step explanation:
Answer:
A
Step-by-step explanation: