A triangle has base x+2y and height 4. What is the area?

1 Answer
smendyka
Jan 10, 2017

#A = 2x + 4y#

Explanation:

The formula for the area of a triangle is:

#A = (h_b xx b)/2#

Where:

#A# is the area - what we are trying to calculate
#h_b# is the height from the base - #4# for this problem
#b# is the length of the base - #x + 2y# for this problem

Substituting results in:

#A = (4 xx (x + 2y))/2#

#A = (cancel(4)2 xx (x + 2y))/cancel(2)#

#A = 2 xx (x + 2y)#

#A = 2x + 4y#

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