Problema Solution
The area of a rectangular plank is 4500 cm². The plank was broken into two pieces, one of which is a square and the other a rectangle. Find the dimensions of the square if the length of the broken off rectangle is 120 cm.
Answer provided by our tutors
Let 'a' represent the length of the square, a>=0 then:
The length of the plank is: 120 + a
The width of the plan is: a
The area equals width*length:
a*(120 + a) = 4500
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click here to see the equation solved for a
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a = 30 cm
The dimension of the square is 30 cm.