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3 years ago

How do we change from radians to degrees?

Mathematics

1 answer:

posledela3 years ago

4 0

Answer:

To convert radians to degrees, the key is knowing that 180 degrees is equal to pi radians. Then multiply the measurement in radians by 180 divided by pi

Step-by-step explanation:

For example, pi over 3 radians would be equal to 60 degrees.

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Need help in geometry right answers only please give me now 25 points

photoshop1234 [79]

The area of the circle = π r² = π (d/2)²
Where r is the radius of the circle
And d is the diameter of the circle
d = 2r OR r = d/2
given d = 10 in ∴ r = d/2 = 10/2 = 5 in
∴ The area of the circle = π r² = π * 5² = 25π ≈ 78.54 in²

The correct answer is the fourth option 78.54

==========================================
very important note:
There is a mistake in the dimension of the answers.
The dimension of the given diameter is inch , while the dimensions of the answers is square cm.

If it is required to find the area in square cm
∵ 1 inch = 2.54 cm
∴ r = d/2 = 10/2 = 5 in = 5 * 2.54 cm = 12.7 cm

∴ Area = π r² = π * (12.7)² = 161.29π ≈ 506.7 square cm

5 0

3 years ago

Read 2 more answers

Help with 4 and 5!!!!!

Mazyrski [523]

I can't see it really

7 0

4 years ago

Select the correct answer. Find the solution(s) for x in the equation below. x2-9x+20=0

trasher [3.6K]

Step-by-step explanation:

Given

x² - 9x + 20 = 0

x² - ( 4 + 5) x + 20 = 0

x² - 4x - 5x + 20 = 0

x ( x - 4 ) - 5 (x - 4 ) = 0

(x - 4 ) ( x - 5 ) = 0

Either

x - 4 =0

x = 4

x - 5 =0

x = 5

x = 4 and 5

Hope it will help :)

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8 0

3 years ago

Read 2 more answers

1. If the product of the integers a,b, and c is 1, then what is the difference between the largest and the smallest possible val

DochEvi [55]

Problem 1

The largest value would be 1 and the smallest would be -1.

To get a product of 1, either all are 1 or two of the variables are -1 and the other one is 1.

Largest value = (1)^2 * (1)^3 * (1)^4 =1

Smallest value = (- 1)^2 * (- 1)^3 * (1)^4 = -1

The difference is:

largest value – smallest value = 1 – (-1) = 2

Therefore the answer is letter D.

Problem 2

% loss = (final price – initial price) * 100%/ initial price

where, final price per dozen = ( $2.50 / piece) (12 piece / dozen) = $30

Therefore,

% loss = ($30 - $33) * 100 / $33

% loss = - 300/ 33 = 9 1/11

Therefore the answer is letter C.

7 0

3 years ago

Samuel worked at a beach over the summer. He worked 6 hours a day, 4 days a week. He earned $7.50 per hour. How much money did h

xeze [42]

Answer:

Total earning in the summer = $1440

Step-by-step explanation:

Earning per hour for Samuel = $7.50

No. of hours worked in a day = 6

Earning for a day = Earning per hour for Samuel *No. of hours worked in a day

Earning for a day = $7.50 *6 = $45

___________________________________________________

No of days worked in a week by Samuel = 4

Earning for week = Earning for a day *No of days worked in a week by Samuel

Earning for week = $45*4 = $180

_____________________________________________________

No. of weeks worked in summer = 8

Total earning in the summer = Earning for week *No. of weeks worked in summer

Total earning in the summer = $180*8 = $1440 (Answer)

4 0

3 years ago