Answer:
12
Step-by-step explanation:
The 2 lines are equal in length. Therefore:-
ST = 21 - 9 = 12
Answer:

Step-by-step explanation:
Given: 
To find: 
Solution:
From the image, 
Put 


Therefore,

She gave Diana, her sister, 6 stickers. This is because 41 divided by 7 is 5 R 6 and there are 6 stickers left if you want each group to have the same amount with no leftovers.
Answer:
28.27cm³
Step-by-step explanation:
Area of a circle:

First, find the area of a full circle with this given radius:

Now, to find the radius of a quarter circle with the same radius, just divide by 4:

The radius of the quarter circle is about 28.27cm³
Answer:
R=155°
S=25°
T=155°
Step-by-step explanation:
R + 25° =180°
R = 180° - 25°
R = 155°
(2) S + 155° =180°
S = 180° - 155°
S = 25°
T = R because t is opposite of r
<em>I </em><em>hope </em><em>this </em><em>was </em><em>helpful </em>