We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
+1
108
2
avatar+90 

 1) Suppose you have a circle A and circle B which both have a central angle measuring 100°. Additionally, the length of the intercepted arc for circle A is 40/9 π meters and for circle B is 5π meters.

If the radius of circle A is 8 meters, what is the radius of circle B?

A)8.5 meters

B)9 meters

C)9.5 meters

D)10 meters

 

2)Suppose you have a circle A and circle B which both have a central angle measuring 40°. Additionally, circle A has a radius of 3/2 ft and the radius of circle B is 9/2 ft.

If the measure of the sector for circle A is 1/4π ft^2, what is the measure of the sector for circle B?

A)2/9π ft^2

B)4/9π ft^2

C)9/4π ft^2

D)9/2π ft^2

 Mar 22, 2019
 #1
avatar+10409 
+1

B)9 meters

C)9/4π ft^2

 

laugh

 Mar 22, 2019
 #2
avatar+101387 
0

First one.....we have.....

 

5pi  =  2pi (r) (100 / 360)

 

5 =  2 (100/ 360)  * r

 

5 = 200/360  * r

 

5 =  20 / 36 *  r

 

5 =   5 / 9  * r        multiply both sides by   9 / 5

 

5 *  ( 9 / 5)   =  r

 

9  (meters)  =   r

 

 

cool cool cool

 Mar 22, 2019

12 Online Users

avatar