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3 years ago

12. How is a ray similar to a line and also a line segment? Show example.

Mathematics

2 answers:

k0ka [10]3 years ago

8 0

A line segment has two endpoints and you can measure them, as shown in the picture with endpoints A and B.

Whereas, A ray is a part of a line that has one endpoint and goes on infinitely in only one direction. You cannot measure the length of a ray. (second picture with the arrow)

Alona [7]3 years ago

4 0

Ray of sun is a line

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What is the area of a sector with a central angle of (2pi/3) radians and a diameter of 12 in?

Stels [109]

Answer:

The area of the sector is $37.68\ in^{2}$

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is equal to

$A=\pi r^{2}$

we have

$r=12/2=6\ in$ ----> the radius is half the diameter

substitute

$A=(3.14)(6)^{2}$

$A=113.04\ in^{2}$

step 2

Find the area of a sector with a central angle of (2pi/3)

Remember that

The area of $113.04\ in^{2}$ subtends a central angle of $2\pi \ radians$

by proportion

Let

x----> the area of the sector

$\frac{2\pi}{113.04}=\frac{(2\pi/3)}{x}\\ \\x=113.04*(2\pi/3)/(2\pi)\\ \\x=37.68\ in^{2}$

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3 years ago

In a triangle, the base and height are in the ratio 6:5. If the area of the triangle is 135 sq cm, calculate the length of the b

Eduardwww [97]

Answer:

use the firmula

area of triangle =1/2b×h

Step-by-step explanation:

let the ratio be 6x and 5x

6x+5x=135
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2 years ago

In 12 years megan will be four times as old as she was 15 years ago. How old is she now?

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Answer:

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Step-by-step explanation:

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