The side of a rectangular floor are x and (x+7).The diagonal is x+8.calculate in metres

a.the value of x
b.the area of the floor

4 answers

well, the diagonal^2=x^2+(x+7)^2

(x+8)^2=x^2+(x+7)^2
mulltiply that out, solve for x
then for areas, multiply the two sides (x) and (x+7)
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