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lisov135 [29]
3 years ago
12

If you know the diameter of a circle, which statement describes how to find the AREA?

Mathematics
2 answers:
pentagon [3]3 years ago
6 0

Answer:

c

Step-by-step explanation:

PI times radius squared

Agata [3.3K]3 years ago
4 0

Answer: d

Step-by-step explanation: The formula for area of a cicle is a=pi(r^2). I like to remember circumference and area by the sentence cherry pies are delicious, apple pies are too. (c[herry]=pi*d, a[pple]=pi(r^2)

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The figure is a square. Find the length of side x in simplest radical form with a rational denominator.
nika2105 [10]

Answer:

10\sqrt{2}

Step-by-step explanation:

The diagonal of any square with side length s is equal to s\sqrt{2}. Since the side length of the square is 10, the diagonal must be \boxed{10\sqrt{2}}.

To support and prove this:

The diagonal creates two 45-45-90 triangles, with the diagonal being the hypotenuse of both of these triangles. The Pythagorean Theorem states that in any triangle, the sum of the squares of both legs is equal to the square of the hypotenuse (a^2+b^2=c^2).

Call the diagonal d. In these two triangles, both legs are equal to 10 (the side lengths of the square), and the hypotenuse is the diagonal. Thus, we have:

10^2+10^2=d^2,\\100+100=d^2,\\d^2=200,\\d=\sqrt{200}=\sqrt{100}\cdot \sqrt{2}=\boxed{10\sqrt{2}}

4 0
3 years ago
Read 2 more answers
What’s the remainder for this synthetic division problem?
Vesna [10]

3   |   1    5     -8     6

.    |         3    24   48

- - - - - - - - - - - - - - - -

.    |    1    8    16    54

That is to say,

\dfrac{x^3+5x^2-8x+6}{x-3}=x^2+8x+16+\dfrac{54}{x-3}

The remainder is 54.

Another way of doing it is to apply the polynomial remainder theorem, which says the remainder upon dividing a polynomial p(x) by x-c is exactly p(c). So recognizing that the listed coefficients refer to

p(x)=x^3+5x^2-8x+6

we find

p(3)=3^3+5\cdot3^2-8\cdot3+6=54

7 0
4 years ago
How many quarts of water does Paul need to add to keep the
Alexxandr [17]

Answer:

  • Step-by-step explanation:

3 0
3 years ago
81÷3=
Tpy6a [65]

Answer:

27

58

61

82

23

53

Step-by-step explanation:

7 0
3 years ago
What is the probability to get a 5 or an odd number when you roll a die​
8090 [49]

Answer:

50%

Step-by-step explanation:

6 numbers on a die, 3 of them are odd.

3/6=1/2=50%

6 0
3 years ago
Read 2 more answers
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