SOLUTION: find the length of the diagonal a. a square in terms of its edge b. a rectangle in terms of its base b and its altitude h c. find the area of an equilateral triangle of side a

Question 375801: find the length of the diagonal
a. a square in terms of its edge
b. a rectangle in terms of its base b and its altitude h
c. find the area of an equilateral triangle of side a
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Use the Pythagorean theorem,
a)

.
.
b)

.
.
.
c)Use Heron's formula,
In this case,

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