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bagirrra123 [75]
3 years ago
11

The circumference (C) of a circle is 16 cm. Which formula can you use to find the diameter (d) if you know that C = πd?

Mathematics
2 answers:
spin [16.1K]3 years ago
7 0

The circumference (C) of a circle is 16 cm.

Circumference C = \pi *d

The approximate value of \pi is 3.14

Given C = 16

We plug in 16 for C and 3.14 for \pi in the formula C = \pi *d . then solve for d

C = \pi *d

16 = 3.14 * d

'd' is multiplied with 3.14. To get 'd' alone we divide by 3.14 from both sides

\frac{16}{3.14} = \frac{\pi*d}{3.14}

5.09554 = d

So diameter of the circle = 5.1 cm

elixir [45]3 years ago
5 0
Okay i'm confused on the question but i do know the answer of the diameter
 if that help the diameter would be d=5.09cm
i hope this helps 
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almond37 [142]

use the order of operations for this equation.

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ANEK [815]

Answer:

\approx 11.2\:\mathrm{in}

Step-by-step explanation:

The swing of the tip of pendulum is creating an arc. The question is actually asking for the length of this arc. The length of an arc is given by 2r\pi\cdot \frac{\theta}{360}, where r is the radius of the circle and \theta is the angle of the arc.

In this problem, we're given:

\theta = 40^{\circ},\\r=16

Substituting given values, we get:

2\cdot 16\cdot \pi \cdot \frac{40}{360}=32\pi\cdot \frac{1}{9}\approx \boxed{11.2\:\mathrm{in}}

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givi [52]

Answer:

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bring on one side of the equal sign all terms containg m, to make it the subject:

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