Answer:
Step-by-step explanation:
Given
Required
Find 
Express 37 as 40 - 3
So, we have:
Compare to 
Substitute 40 for x and 3 for y in
Evaluate all exponents
Evaluate all products
Hence:
Answer:
Step-by-step explanation:
Comment
The first step is to find the surface area of 1 fence post.
The formula is
Area_ends = 2 pi r^2 for the ends.
Area_body = 2*pi*r * h
Givens
r = d/2 r is the radius ; d is the diameter
r = 1/2 foot
h = 10 feet
Solution
1 fence post
Area = ends + area body
Area = 2*3.14 * (1/2)^2 + 2 * pi * r * h
Area = 2*3.14* (1/2)^2 + 2 * 3.14 * 1/2 * 10
Area = 1.57 + 31.4
Area = 32,97 square feet.
10 fence posts
10*32.97 = 329.7 square feet
Answer
10 fence posts have 329.7 square feet in area.
The last one if we shade the unwanted part
19.04 is the answer
hope that helps :)
You have two fractions with the same (common) denominator, so you
subtract the numerators and put that over the common denominator.
