Answer:
Part a) The fraction is 
Part b) The percent is 
Step-by-step explanation:
Part a)
Find the fraction
we know that
To find the fraction of the shaded part in the square divide the number of shaded squares by the total number of squares
so
Let
x-------> the number of shaded squares
y-------> the total number of squares
f-------> the fraction of the shaded part
so

In this problem we have


substitutes

Simplify

Part b) Find the percent
To find the percent multiply the fraction by 100
so

convert to mixed number

Answer:
x = variable (a symbol, usually a letter, representing possible inputs)
4 = constant (numbers that stand alone and have a fixed value)
3 = coefficient (number multiplied by variable)
Answer:
base 48 X 48 = 2304
triangles 0.5 X 48 X 25=600
600 X 4 = 2400
2400 + 2304 = 4704 squared inches
Answer:
:(
Step-by-step explanation:
figure it out