Question

If the area of a rectangular land is $(a^2–b^2)$ sq.units whose breadth is(a – b) then, its length is_________?

Answer 1

We know,

$(a^2–b^2)=(a+b)(a-b)$

Area of rectangle $=l\times b$

$(a^2–b^2)=l\times (a-b)$

So, $l=\frac{(a+b)(a-b)}{a-b}=(a+b)$