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aleksandrvk [35]
3 years ago
7

Find the area of the circle that contains the sector described below. Round to the nearest tenth, if necessary.

Mathematics
1 answer:
Elis [28]3 years ago
6 0

Answer:

The area of the circle is 2520 cm²

Step-by-step explanation:

The area of an arc is given by the following formula:

arc area = pi*r²(angle/360)

In this case we have the area and the angle and we want to find r, so we have:

210 = pi*r²*(30/360)

210 = pi*r²*(1/12)

210*12 = pi*r²

pi*r² = 210*12

r² = 2520/pi

r = sqrt(2520/pi)

r = 28.3221

The area of the circle that has this arc is given by:

area = pi*r²

area = pi*(28.3221)² = 2520 cm²

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joja [24]

Answer:

The area of a circle is equal to pi times the radius squared so that means the radius of this circle is the square root of. 25!that means the radius is 5

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3 years ago
Find the equation of the straight line with the gradient -2/3 and passing through the point(1,1)
adell [148]

Answer:

y = -2/3 x + 5/3

Step-by-step explanation:

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2 years ago
If 10 + a = 10, then a = 0
Lunna [17]

Answer:

B) identity property of addition.

Step-by-step explanation:

Given:

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3 years ago
1 over 4 plus 1 over 2 plus x = - 3 over 4
blagie [28]

Answer:

5/8

Step-by-step explanation:

6 0
3 years ago
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Vikki [24]
When finding slope the answer is always going to be rise/run so in this case,

#1 would be 1/2 (bc it goes up one and right 2)

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another trick you could use is dividing the denominator by the numerator
3 0
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