Answer:
the surface area of the rectangle is 40
the surface area of the triangles is 6
the base rectangle is 24
Step-by-step explanation:
Perpendicular means crossing so it would be a right angle. Therefore the 2 times will be
9:00 and 3:00
When the hour hand is at the 9 it will be perpendicular to the minute hand because they will be crossing paths if you extend the arms in both directions. The same with 3
I think your answer would be D.0562
Answer:
100,000 or 
Step-by-step explanation:

Consider the arithmetic series 
Let t=1 in the given series, we get
first term =
= 3-4 = -1.
Let t=2 in the given series, we get
second term =
= 
Let t=3 in the given series, we get
third term = 
Now, let t=18 in the given series, we get
last term = l = 
We get the series as
-1, 2, 5,..... 50
Sum = 
= 
= 
= 441
Therefore, the sum of the given arithmetic series is 441.