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3 years ago

If the diameter of a circle is 6 inches, how long is the arc subtended by an angle measuring 70°?

Mathematics

2 answers:

m_a_m_a [10]3 years ago

3 0

C = πD = π6in

Arc = D * 70°/360° = 3.1416*6*7/36=3.67 in

Leya [2.2K]3 years ago

3 0

Answer:

Length of arc of a circle is given by:

$L = r \cdot \theta$ .....[1]

where

L is the length of an arc

r is the radius of the circle.

As per the statement:

Diameter of the circle(D) = 6 inches.

we know that:

D =2r

6 = 2r

Divide both sides by 2 we get;

3 = r

r = 3 inches

We have to find the long arc arc subtended by an angle measuring 70°.

Substitute the value of r = 3 inches and $\theta = 70^{\circ}$ in [1] we have;

$L =3 \cdot 70$

Simplify:

L = 210 inches

Therefore, 210 inches long is the arc subtended by an angle measuring 70 degree.

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Step-by-step explanation:

Part 1) we have

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step 1

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step 2

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Rewrite as perfect squares

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Complete the squares

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Rewrite as perfect squares

$f(x)-4=-(x-8)^{2}$

$f(x)=-(x-8)^{2}+4$

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