The correct answer is answer choice A, 59. The sum of the three angles of a triangle is always 180°, so, if you have two angles, all you have to do is subtract them from 180 to get the thirds angle.
180 - 53 - 68 = 59
The third angle is 59°.
Hope this helps!
I think that the answer is B.0.0000000861
Answer:

Step-by-step explanation:
First, we need to find the sequence associated to the summation. As you can see the sum only takes odd numbers into account. Hence the sequence it is defined by:

Where:

Now, we only need to find the limits of the summation:
Evaluating n=1

Evaluating n=50

Therefore the summation can be written as:

The answer is C. that is 67 percent of the original.
from left to right
1st triangle is = 24
small rectangle is = 24
larger rectangle is = 96
final triangle is = 12
addition of above values give the area of whole figure which is = 156 units