Area = 3.14(r)^2
radius is half of diameter
3.14(7)^2
= 153.86
so B
Answer:
d
Step-by-step explanation:
im sorry if its wrong my apologies
The calculus approach is to use Newtons Method:

where

Start with initial guess of "a".
After 4 or 5 iterations, you should get a close approximation to

...............
If you wanted a non-calculus approach, I would suggest divide and conquer.
First determine which 2 integers the sqrt lies in between by perfect squares.

Then use midpoint

for next guess, if

then repeat with "m" = midpoint. Otherwise repeat with "n" = midpoint.
Continue until you have a good approximation, about 6-8 decimal points.
Answer:
32
Step-by-step explanation:
Absolute value of |-32| = 32
For the middle sections, you can use the area of a trapezoid: 1/2(h1+h2)b
1/2(1.25+2)1=1.625
The two triangles can form a square
1.25*1.75=2.1875
Add it all together
1.625+1.625+2.1875=5.4375