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Elanso [62]
3 years ago
14

The circumference of a circle is 15 centimeters what is the area of the circle in terms of pie

Mathematics
1 answer:
inn [45]3 years ago
3 0

Answer: The area of the circle= 56.25/π

Step-by-step explanation: With the circumference of the circle already given, we can work backwards to determine the value of the radius.

The circumference of a circle is calculated as

Circumference= 2πr

Since the circumference is already known, we can now express it as;

15 = 2πr

Divide both sides of the equation by 2

7.5 = πr

If we cross multiply we now have

7.5/π = r

Having calculated the radius as 7.5/π, the area can be derived as

Area d a circle = πr²

Area of a circle = π x (7.5/π)²

Area of a circle = π x (56.25/π²)

Area of a circle = 56.25/π

The area of the circle in terms of pi is given as 56.25/π

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If cosθ=2/3 find cscθ using identities. This is in quad. 1.
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Step-by-step explanation:

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\quad \twoheadrightarrow\sf {cos \; \theta = \dfrac{Base}{Hypotenuse} } \\

Hence, base = 2 units and hypotenuse = 3 units.

\quad \twoheadrightarrow\sf { H^2 = B^2 + P^2} \\

\quad \twoheadrightarrow\sf { P^2 = H^2 - B^2} \\

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Now, we know that :

\quad \twoheadrightarrow\sf {cosec \; \theta = \dfrac{Hypotenuse}{Perpendicular} } \\

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2 years ago
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natka813 [3]

The answer is the first one:

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B and E

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