A rectangular photo frame has breadth and length

MATHEMATICS · Multi-part · CBSE · Mathematics · Quadratic Equations · Quadratic Equations

Problem

A rectangular photo frame has breadth

b\ \text{cm}

and length

(3b - 30)\ \text{cm}

. Its area is

27\,000\ \text{cm}^2

. (i) Find the breadth and length in metres. (ii) Find the perimeter of the frame in metres.