Answer:
I believe it is the last one i'm not sure
Step-by-step explanation:
Answer:
A. 154 
Step-by-step explanation:
The formula for the area of a circle is 
First find the radius by dividing the diameter by 2, which is 7


≈154 
Answer:
81 + 6 + 1 = 88 if that's your question
Step-by-step explanation:
Answer:
1310.4
Step-by-step explanation:
26 x 12= 312 x 4.2= 1310.4
Answer:
3
Step-by-step explanation:
The slope of the line passing through the points is
m = (y2-y1)/(x2-x1)
= ( 1-2)/(8-5)
= -1/3
The slope that is perpendicular is the negative reciprocal which is
- ( 1/(-1/3)
+ 3/1
The perpendicular slope is 3