Answer: 116
Step-by-step explanation:
Cindy is 72 inches long. Imagine it like a right triangle. Her shadow is the base, she is the side, and the distance between her head and the end of the shadow is the diagonal line connecting the two. Use the Pythagorean theorem to find how tall cindy is.
a²+b²=c² a=21, the length of the shadow
b= ? cindy's height
c= 75, the distance from her head to the edge of the shadow
21²+ b²=75²
441 +b² = 5625
-441 -441
------ -------
0 5184
b² = 5184
√b² =√5184
b= 72
hope it helps

Move variables to the left by adding their opposites to both sides. Eliminate the opposites.

Move constants to the right by adding their opposites to both sides. Eliminate the opposites.

Collect the like terms by subtracting their coefficients and numbers.

Calculate the sum or difference. Extract the negative sign from the expression. Add the numbers.

Divide both sides of the equation by 5 and calculate the quotient.
I think you divde the fractions
Answer: Rectangle
Reasoning: 4 straight sides, 2 pairs of sides of equal length.