Which expression represents the phrase? "6 less than the sum of 9 and d." A) 6 – 9d B) 9d + 6 C) 6 – (9 + d) D) (9 + d) – 6

(9+d) - 6

Step-by-step explanation:

6 less than the sum of 9 and d

First we do the sum  since less than means it comes after

(9+d)

Then subtract 6

(9+d) - 6

x = central angle apc = measure of minor arc ac

the two angles x and 30 add to 180, so x+30 = 180 and x = 180-30 = 150. the measure of minor arc ac is 150 degrees.

what we need to do from here is find the circumference and then multiply it by x/360 since there are 360 degrees in a circle. in this case, x = 150, so x/360 = 150/360 = 15/36 = 5/12. the shortest distance along the curve from a to c is 5/12 of the distance around the entire circle (aka circumference)

c = circumference

c = pi*d

c = pi*24

c = 24pi

now multiply this by 5/12 to get

distance along minor arc ac = (5/12)*(circumference)

distance along minor arc ac = (5/12)*(24pi)

distance along minor arc ac = 10pi

the formula you can use is

l = (x/360)*pi*d

with

l = length of minor arc

x = central angle

d = diameter

which essentially is the steps we took though a bit differently.

step-by-step explanation:

it will be a cylinder. with a diameter of 8 and 4 single pieces high