Question

a piece of wire 18cm long is to be bent to form a rectangle if it's length is xcm obtain an expression for its area in terms of x.

Answer 1

Step-by-step explanation:

A/q

18=perimeter of rectangle

area=l×b

if l=x then b=18/2-x

x×18/2-x

x×9-x

9x-x

=8x