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The width of a rectangle is 3 feet and the diagonal is 5 feet. What is the area of the rectangle?

1 Answer

José Roberto Pereira

Oct 18, 2015

#A=12 feet^2#

Explanation:

According to Pythagorian Theorem:

#5^2=3^2+x^2#

#x^2=5^2-3^2#

#x=sqrt(25-9)#

#x=4 feet#

The area is:

#A=3xx4=12 feet^2#

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