Question

The perimeter of a rectangle is 60cm it’s length is 12 cm what is it’s width write a expression using x to represent the rectangles width solve for the width

Answer 1

Step-by-step explanation:

since permieter's eqn is length+width+length+width

you consider 12cm (length) to be taken twice so it becomes 24 and also the X will be taken twice to get perimeter so it will become 2X

Then this equation can be easily derived from the calculations above and the question

Equation;

24cm+2X=60cm

(since perimeter is said to be 60cm)

Then you simply make 2X the subject which will then become;

2X=60cm-24cm

2X=36cm

then you simplify which then you will get;

X=18cm

you can check the answer by calculating perimeter and comparing to the given perimeter in the question

THE WIDTH IS 18CM