Surface area: 4*pi*r^2 = 4*pi*5^2= 4*25*pi = 100pi or <span>314.16</span>
Answer:
5 i think mabe
Step-by-step explanation:
16. 40%。17. 0.8
Addition and subtraction
The value of x is equal to 1.5.
It is required to find x.
<h3>What is quadratic equation?</h3>
Any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power. The quadratic formula to solve a quadratic equation ax2 + bx + c = 0 is x = [-b ± √(b2 - 4ac)]/2a.
Given that:
So for the triangle, the perimeter would be:

By solving in above equation, we get

So, we take x= 1.5 and neglect -4 because we can't take negative roots of the quadratic equation.
Hence, the value of x is equal to 1.5.
Learn more about quadratic equation here:
brainly.com/question/17177510
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The answer is 57765363535366355336