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3 years ago

50 POINTS AND BRAINLIEST!!! QUICK

Mathematics

2 answers:

lisov135 [29]3 years ago

7 0

A)

R = outside radius
r = inside radius

equation: ( pi*R^2) - (pi*r^2)

B)
3.14 x 11^2 - 3.14 x 9^2

379.94 - 254.34 = 125.6 square meters

katrin2010 [14]3 years ago

7 0

A = pi r^2 pi 9^2 81pi 81 * 3.14 = 254.34 pi 11^2 = 121pi 121 * 3.14 =379.94
379.94 - 254.34 = 125.60 area of sidewalk

Hope it helps

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find the measure of angle A using your correct answer from questions 1 2 or 3 A 45 B 36.9 C 53.1 D 35.2

Delicious77 [7]

Answer:

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Step-by-step explanation:

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2 years ago

Trigonometry

Nadusha1986 [10]

55° is equal to 0.9599 radians.

Step-by-step explanation:

Step 1:

If an angle is represented in degrees, it will be of the form x°.

If an angle is represented in radians, it will be of the form $\frac{\pi}{x}$ radians.

To convert degrees to radians, we multiply the degree measure by $\frac{\pi}{180}$ .

For the conversion of degrees to radians,

the degrees in radians = (given value in degrees)( $\frac{\pi}{180}$ ).

Step 2:

To convert 50°,

$55\left(\frac{\pi}{180}\right)=\frac{55\pi}{180}.$

$0.3055 (\pi) =0.9599$ radians.

So 55° is equal to 0.9599 radians.

7 0

3 years ago

Read 2 more answers

Need help with these two questions please

lisabon 2012 [21]

You can figure out the answer by doing this:

8% = 2300/x

and do the same for the second one
(and solve)

4 0

2 years ago

a parking garage has 6 levels. Each level has 15 row. Each row has the same number of parking spaces. there are 2,250 parking sp

Mandarinka [93]

To start with, we know there’s a definite amount of parking spaces in all(2,250) and we also know each level(6 in all) had 15 rows of parking spaces.

Equation

A = Parking spots per row

A = 2,250 Divided by(6 levels times 15 rows)

A= 2,250 Divided by 90

A = 25

The correct answer is 25 parking spots per row

To check this answer we can do

25 spots per row, Times 15 rows per level, Times the total amount of levels (6)

= the total amount of parking spots

25*15*6= 2,250

True

This confirms this answer as correct. Hope this helps.

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2 years ago

Round Ed to the nearthest tenth and answer now question

Vikki [24]

Answer:

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