A rectangular platform measures by

MATHEMATICS · Single correct · CBSE · Mathematics · Quadratic Equations · Quadratic Equations

Problem

A rectangular platform measures

24\,\text{m}

15\,\text{m}

. It is to be enlarged by adding a uniform strip of concrete all around so that the total area becomes

630\,\text{m}^2

. What is the width of the strip? (a)

1.5\,\text{m}

(b)

3\,\text{m}

(c)

6\,\text{m}

(d)

3.5\,\text{m}