Answer:
Example: Find the radian measure of the angles −70° and 120°.
Solution: To find the radian measure of −70° we multiply −70 by the conversion factor /180. We get
Similarly, for 120° we obtain
Note that when we write an angle as a fractional amount of , for example 2/3 times we write the result either as the numerator times divided by the denominator or as the fraction times . So the two values
are equivalent ways of writing the same number. You will see both methods used in the text and in the exercises.
Example: Find the degree measure of /12.
Solution: The conversion factor for going from radians to degrees is 180/. We get
and so the radian measure of /12 is 15°.
Step-by-step explanation:
Question 1 240/45=5.333333333333
The answer is that all the sevens are in the hundreds place I hoped this helped I suck a maths so I hope it helps
20.50 into a fraction is 41/2. Since 20 is already a whole number, there is no need to convert it. Since .50 is a decimal, I have to convert it to a fraction, which is 1/2. I end up with the mixed number 20 1/2. Since I need to convert it to a fraction, I have to simplify it. 20 1/2 written as a fraction greater than 1 is 41/2.
Hope this helped !!
Answer:
The formula for area of a circle is : A = PI x r^2
A) find the are of the two circles, subtract the two to find the area of the side walk:
Outside circle: A = PI x 10^2
Area = 100PI
Inner circle: A = PI x 8^2
Area = 64PI
Area of sidewalk:
100PI - 64 PI = 36PI
B) replace PI with 3.14:
Area = 36 x 3.14 = 113.04 square meters.
Step-by-step explanation:
Hope this helped.
