How to solve these two problems ？

8)   is -0.896 radians

9) length of arc is 41.91 cm

Solution:

8)

Given that,

is in quadrant 4

To find:

From given,

Thus value of is -51.34 degrees

Convert degrees to radians

Thus is -0.896 radians

9)

From given,

radius = 15.4 cm

The length of arc when angle in radians is:

Thus length of arc is 41.91 cm

c

step-by-step explanation:

it isn't d, because the interquartile range is from 27-57. and the interquartile range is basically half the data, it's pretty obvious.

it isn't b, because like i said earlier, the interquartile range is from 27-57. 57-27 is 30. the real range has to be longer

not a either. although it looks like it, 3/4 of the data is not greater than 27. but if c is wrong than this should be correct

the correct answer is c, because 13 is the point in which the plot starts

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2