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4 years ago

Find the diameter of a circle with a circumference of length 26cm round to the nearest tenth

Mathematics

2 answers:

kondaur [170]4 years ago

7 0

8.3cm hope this helps your with your work

telo118 [61]4 years ago

6 0

Answer:

8.3 cm

Step-by-step explanation:

The equation 2πr is used to find circumference. To find the diameter, you will first need to find the radius, and in order to find the radius, you need to isolate "r" in the equation.

2πr = 26

Divide 2 for both sides.

πr = 13

Divide π (I am assuming π is 3.14) for both sides.

r = 4.140127389

Our radius is about 4.140127389. To find the diameter, multiply your radius by 2. This gives us 8.276057041, which rounds to 8.3 cm.

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kotegsom [21]

Note:
The area of a circle with radius r is πr².
An entire circle has a central angle of 360°.

For the sector with radius = (3+4) = 7cm and a central angle of 120°, the area is
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For the sector with radius = 3 cm and a central angle of 120°. the area is
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The area of the shaded sector (see the figure) is
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Answer: $\frac{40}{3} \pi \, cm^{2}$

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3 years ago

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Natasha_Volkova [10]

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3 years ago

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Answer:

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Answer:

Step-by-step explanation:

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