2 years ago

What information do you need in order to find the area or circumference of a circle?

Mathematics

2 answers:

hjlf2 years ago

8 0

You need to know the radius.

nekit [7.7K]2 years ago

6 0

Use the formula for the area of a circle,π*r^2, or pi times radius r squared = Area A.Use the formula for the circumference of a circle, 2*π*r, or 2 times pi time radius r = Circumference C.Isolate r in the formula for the area, so divide by π, then take the square root: sqrt(A/π)

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Write the exponential function for the following geometric sequence:

Luden [163]

Step-by-step explanation:

I think the answer should be y = 36 ( 3x) as the numbers in the sequence are being divide by 3

7 0

3 years ago

Tan39= x/68 Plz help. Will give brainliet

lesya [120]

Answer:

$\huge\boxed{x \approx 55}$

Step-by-step explanation:

We need to note that this is an equation, in which we can solve for x.

$tan(39) = \frac{x}{68}$

We can use a calculator to find the tangent of 39 - we type 39 into the calculator then press the "TAN" button to find it's tangent. We find that to be around 0.81.

We now have the formula simplified down to $0.81 = \frac{x}{68}$ . To solve for x, we want to isolate it on one side, so we can multiply both sides by 68 to get rid of the fraction.