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wel
3 years ago
12

What's the area of a slice of pizza from a large pizza with radius 9 inches cut into 6 equal slices?

Mathematics
1 answer:
Alexxandr [17]3 years ago
3 0

Solution:

<u>Step-1: Find the area of the pizza.</u>

  • Area of pizza = πr²
  • => πr² = π x 9 x 9
  • => 81π = Area of pizza

<u>Step-2: Find the area of the slice.</u>

  • = 81π/6 = Area of slice
  • => 27π/2 = 13.5π = Area of slice

Option D is correct.

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Answer:

D is correct. x^2-2x-4=0

Step-by-step explanation:

We are given the root of the equation

x=1+\pm \sqrt{5}

If we are given solution of the equation then find equation using formula.

If a and b are the solution of equation then equation would be (x-a)(x-b)=0

Here, a=1+\sqrt{5} , b=1-\sqrt{5}

Equation form would be (x-1-\sqrt{5})(x-1+\sqrt{5})=0

Now we simplify the above equation to get correct option.

x^2-x+x\sqrt{5}-x+1-\sqrt{5}-x\sqrt{5}+\sqrt{5}-5=0

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So, D is correct.  x^2-2x-4=0

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3 years ago
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3 years ago
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