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2 years ago

I am dumb ..... so what is the formula of a triangle for perimeter... yeah i know

Mathematics

1 answer:

Sav [38]2 years ago

5 0

Answer:

The formula for the perimeter of a triangle is Side A + Side B + Side C.

The formula for the area of a triangle is Base x Height = total divided by 2.

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2 years ago

Note that 3 is a factor of 21. This means that 3×[]=21. Another way to write this is 3×n=21. Find a value of n that makes the st

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Answer:

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2 years ago

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Answer:

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2 years ago

Find the cube of 2/3

Murrr4er [49]

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2 years ago

Read 2 more answers

Finding area of shaded sectors.

tekilochka [14]

Answer:

69.81 sq. m. (rounded to 2 decimal places)

Step-by-step explanation:

The sector of a circle is "part" or "portion" of a circle. The formula for the area of a sector is:

$A=\frac{\theta}{360}*\pi r^2$

Where

$\theta$ is the central angle

r is the radius

Given the figure, the arc is given as 80 degrees, but not the central angle of the shaded sector. But from geometry we know that the central angle and the intercepted arc have the same measure. So we can say:

$\theta = 80$

Also, the radius of the circle shown is 10 meters, so

r = 10

Now, we substitute in formula and find our answer:

$A=\frac{\theta}{360}*\pi r^2\\A=\frac{80}{360}*\pi (10)^2\\A=\frac{2}{9}*100\pi\\A=\frac{200\pi}{9}\\A=69.81$

Thus,

The area of the shaded sector is 69.81 sq. meters.

5 0

2 years ago