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KATRIN_1 [288]
3 years ago
10

Which choice best represents the area of a circle with a diameter of 16 cm. Use ≈3.14

Mathematics
2 answers:
Rudiy273 years ago
8 0

Answer:

it is 25.12

Step-by-step explanation:

Amiraneli [1.4K]3 years ago
3 0

Answer:

it is 803.84 centimeters squared

Step-by-step explanation:

area of a circle is r^2* 3.14

=16*16*3.14

=803.84

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an isosceles triangle has angle measures of 55, 55, and 70. the side across the 70 degree angle is 10 inches long. how long are
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Answer:

The other sides of triangles are 8.72 in and 8.72 in

Step-by-step explanation:

 In a triangle ABC. Please find the attachment for figure.

\angle A=70^{\circ}

\angle B=\angle C=55^{\circ}

Side BC=a = 10 in

Using sine law of trigonometry,

\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}

Substitute the given value into formula.

\dfrac{10}{\sin 70}=\dfrac{b}{\sin 55}=\dfrac{c}{\sin 55}

\dfrac{10}{\sin 70}=\dfrac{b}{\sin 55}

Cross multiply and we get

b=\sin 55\times \dfrac{10}{\sin 70}

b=8.72 in

It is a isosceles triangle. Therefore, b=c=8.72 in

Hence, The other sides of triangles are 8.72 in and 8.72 in

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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