If the radius of the circle is 4 cm, find its circumference. [use 3.14 for π.] a) 12.56 cm b) 25.12 cm c) 37.68 cm d) 50.24 cm

C =25.12 cm

Step-by-step explanation:

Circumference of a circle is given by

C = pi d

We know that d = 2r  (twice the radius)

C = pi *2r

Substituting in

C = pi*2*4

C = pi*8

Using 3.14 for pi

C = (3.14)*8

C =25.12 cm

(- 1, 0 )

step-by-step explanation:

an x- intercept is where the function crosses the x- axis.

to find the x- intercept/s look for the value of x when f(x) = 0

from the given table there are 3 values of x where f(x) = 0

when x = - 1, x = 2, x = 3

the one that is listed is (- 1, 0 )

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)