geometry b - unit 4: exam

what is the length of arc ef?

11.3

given that m<vcw = 97, what is the length of vw?

97pi/18 m

if circle a is dilated so that it is the same size as circle b, which transformations could be performed next to show that the circles are similar? select all that apply.

0.67 of 1 translate the dilated circle so that its center is at point b reflect the dilated circle over line g

if minor arc fe measures 51 and minor arc ed measures 79, what is the measure of ∠fcd?

130

what is the measure of afb?

180

if ab = 68, what is m<azb?

34

what is m<okm?

36

in circle t, ab = (3x + 9) and cd = (11x - 71). what is the measure of ab?

39

if m<lym = 52, what is measure of jk?

52

if the radius of circle o is 10 inches and m<uon = 90, what is the area of sector urn?

75pi

eli wants to show that circle j is similar to circle k using transformations. what combination of transformations would map circle j onto circle k to show that the circles are similar?

XXX dilate with a scale factor of 1/2 rotate 90 clockwise

if d1 = 1 and d2 = 2r, and if cb denotes the circumference of circle b, which equation is true?

XXX 1/2r = cb/pi

what is m<bed?

XXX 114

what is the measure of <nop?

XXX 136

if m<ijk = 112, what is m<ihk?

XXX 224

if m<bfg = (2x + 146) and m<bcg = (4x + 238), what is the value of x?

XXX 34

which answer choice correctly describes how he can calculate this value?

find the proportion of the sector defined by the major arc to the circle, then multiply by the area of the circle.

marie forgot the formula for finding the area of a circle, so she divided the circle into sectors and created a parallelogram-shaped figure. what should she use as the height of the figure?

the radius

what is the length of tu?

tu = 136 units